Lexicon MPX 100 Dual Channel Processor

Very easy to use but plan on spending time finding ?your preferred variation of the effect?. The MPX100 has 16 stand alone digital effects like chorus, flange, delay, echo, tremolo, pitch and various types of reverb Lexicon is famous for. It also has a mode to incorporate the use of dual effects (4 reverb types + delay, flange, pitch or chorus / 3 delay types + flange, pitch or chorus). The control panel is simple and very easy to operate. Controls are; Input level, effects Mix (wet/dry), Output level, Effect Level/Balance for stereo applications, Variation control that provides 16 different variations of the effect, and the Adjustment control which allows you to custom tailor the effect within the variation. Changing from one effect to another is just a rotation of the Program knob. What sold me are the 16 programmable User channels. It?s breeze to use. Adjust the effect to your liking, hit ?Store?, spin the Program knob to ?User?, spin the Variation knob to the user number you want to use and hit the ?Store? button again. Bingo, stored user program.

I run the MPX100 through the parallel effects loop on my Mesa-Boogie Nomad 55 Head. It is a very, very quiet unit. As for sound quality of the effects ? There are a lot of gripes about the sound but none apply to me. I enjoy what I use.

This is the first Lexicon product I purchased, Lexicon appears to produce reliable stuff. The MPX100 and Lexicon was highly rated by people I trust.

I purchased the MPX100 specifically for use with my electric guitar rig for live and in-studio recording applications and always run it through the effects loop. I wanted a quiet, all-purpose effects unit ? something that would provide effects such as chorus, delay, tremolo and have the capability of being subtly blended into the guitar sound. The MPX100 allows me to do just that. I have stored 5 custom-tailored User programs so far in the unit. During live applications I select the effect in between songs. Really easy. I used it while recording rhythm and lead tracks in the studio. I just selected my user programs for each track or part being recorded. The recording engineer commented on how rich the sound was produced from my rig. I?m not into huge sound alteration via effects processors (although this thing can provide those alterations) so the MPX100 does it for me. If you?re into nice effects and effects all in one unit, this may be a processor you want to consider. I did a cost comparison between well-made effects pedals and the MPX100 ? I found it to be not only much cheaper in the long run but much easier to maintain as well. I am tired of pedals breaking down, switches that don?t activate during live applications, pedal noise, dying batteries, etc. Also, Lexicon just came out with a MPX110 so you should be able to get the MPX100 at a good price. I?ve seen them at ~$180 since I got mine. The MPX100 does what I want it to do and much, much more. I?m still exploring the possibilities.

Really Easy To Use. If you know what effect you want and you can spend a few minutes (under 10) to read a manual, you're all set. The manual explains clearly what each effect is and how to control it, how to create, edit and save your own and even provides a diagram should you want to create your own bypass footswitch. (It has a jack for a bypass switch as well as the little bypass button on the front, but doesn't come with a footswitch.)

I like the chorus, I like the flange and trem effects. Delay is delay and it works like it should, pitch shifting is decent, but it can be a little picky at times. On more than one occasion, the same settings have not produced the same effect. (Only happened with the pitch shifting) I found that I need to turn the output volume all the way up with the input volume just below clipping in order to maintain the same volume I would have going direct into the amp (Marshall VS100).

Some of the effects I don't find effective are the reverb (it seems weak, and I like the reverb on the amp better anway) and detune.


It's perfectly quiet, but it does make a noticeable difference in sound quality when connected without going through the FX loop.

I've had problems with it from the start. The knobs tend to fall off all over the place. I had to have it repaired after a few months of use. When I plugged it in, all the lights remained on and I had no output signal. A hard reset didn't work for this.

Customer support was excellent. They issued me an RMA within a day and had it back in a little over a week. They even called after I got it back to make sure everything was working fine. One problem I did have was paying for shipping it back to them...It took me a while to come up with the money to pay for shipping and insurance (around $25). I just don't see why I should be paying for it when the problem was within the device and not my fault.

Easy to use, as good as a Boss pedal for chorus and flange, doesn't need batteries...

Lower sound quality, reliability issues, limited quality on some effects...

I can't belive people are comparing this thing to a Roland srv3030! The roland is more than double the price of the lexicon mpx100, of course it is going to be better. Nobody compares Ford Escorts to BMWs do they? No, so why do it with music equipment. You have your cheaper equipment and then you have your expensive equipment that only a selwct group of people can afford. Use what you can get, because at the end of the day, it's your creativity that makes the music, not your expensive toys.

This one is VERY easy to use- all the patches are labelled right there, and the variation knobs are easy to use. I especially like that it has a tap button. I prefer this one if I ever have to use a multi-tap delay patch that's synchronized with the beat.

I have a good collection of cheap reverbs, and this one is better than most. I like the reverb sound better than the Yamaha REV100 and Digitech S100, so I guess this is the winner of the "challenge of the 100s" However, I like the tone of the Zoom 1204 BETTER than the Lexicon MPX100. And the Roland SRV3030 is a whole league better than the MPX100.

Lexicon is serious, well made stuff.

dont' know.

I use this in a recording studio. If I lost it I think I'd probably spend a little more for the MPX500- I've heard there's a big improvement in sound. Lexicon is one of those very common names in studios.

I bought this unit and the Roland SRV-3030 and did a side by side comparison. This Lexicon unit doesn't even come close!!! Do yourself a favor and buy the Roland SRV-3030. It gives you TOTAL control over everything. Super rich sounding reverbs. The Lexicon unit gave me very thin/small sounding reverbs. The Roland unit is just about the same price.

The quality of effects is not worth the money. Try out the Roland SRV-3030 instead.

It is very easy to use. Plug in the power, turn the knobs and off you go. The manual is good. Editing is easy, turn Adjust to change the parameter. Some patches can have timing changed using the Tap button which is very convenient.
You can't get full control over the parameters - they are grouped and changed together with the Adjust button. For me -new to sound effects- this is a good way to get a feeling what it can do.

I use the MPX 100 within my midi setup - a computer equipped with Roland Sound Canvas, Terratec DMX soundsystem. The sound quality is good - but hey, I bought this unit reading all these posts (and other branches) before homing into some particular models. I liked the Lexicon best. My favourite effects are the plate and gate effects.
Not all effects are really suitable for all kinds of music and in those circumstances some effects are hardly noticable.
There is a delay with the pitch effect.

And what is this noise I keep reading about? This device has no noise.

It worked, it works, I will tell you how reliable it is when it breaks down. I guess it won't...

Who needs them ?

As this is my first reverb I really like the sound quality and the ease of use. I was considering the MPX 100 and the MPX 200 but I am glad I bought the MPX 100. It offers superp sound quality, the best in this price range I would say, and as an absolute beginner in effects it is a really convenient device. Go buy one. Now.

This unit is very simple to use. Manual is also very simple to understand.

This unit is the weakest reverb processor I have come across to date. If your sound requires a rich lush reverb, DO NOT purchase this unit. I am a professional recording artist, and my sound largely depends on rich hall reverbs. If you select largest hall reverb on this unit, and crank the mix and the reverb feedback, all you get is a weak sounding reverb with lots of splash. As a comparison, on the Alesis Quad, if you select a hall reverb with the mix and feedback cranked, you get a true hall reverb sound that does not fade. Granted is you are someone who is looking for a studio type processor that doesn't overwhelm your sound, this is perfect. It just won't give you any strength if you need it.

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Stay away from this unit, unless you want a very subtle reverb effects processor.

I got this unit used here in Argentina. It is not difficult to use, but there are a lot of "hidden" features you can't remember without the manual.

I use it mostly for reverbs. They are great.
I use it for my electronic drum rig (ddrum4) in conjunction with a Mackie 1604 mixer.

I has more "hiss" than the ddrum4 outs.

IT worked well everytime. Rugged construction. I don't like the external power suply

No experience

This is a good unit for me, it gives my drums very realistic room effects. Just like my ddrum4, what you see is what you get, there are not a lot of editing capabilities, but the sounds are pro-quality.

Not that easy to get a good sound out of the box, especially when programming ir for studio work - lexicon will give you the delay and predealy times when visiting the site, but only after a slight dig. A little bit slack. for live work it sounds fantastic, nothing warpy or wierd, justa professional sounding reverb and a really interesting pitch shift. The flanging and chorus leave a lot to be desired, but hell, lexicon are know for reverb not really anything else.

Truly excellent, they could have left it rubbish al la zoom but they put good quality ad/da's into what is essentaily a budget FX box, well done lexicon!

Yeah I'd use it without B/U

The reverbs almost rival the quality of native essentials trueverb. But without controlability - I bought it for the reverbs and I was NOT disappointted....otherwise I would have rated it lower - 24bit internals for that price? tell me where else S/H you might get that?

I don't know what the couple of people who rated the MPX100 a one are thinking. While this unit does require some tweaking to get really good sounds, it's not rocket science. Have a little patience. Navigating the controls does require one to read the excellent manual, but one could also figure it out without the manual. The adjust knob doesn't always do the same things on every patch.

I run the MPX 100 through the effects loop of my Peavey Ecoustic 112 with a Lexicon Vortex and JamMan. My Takamine LTD 98 is plugged into a Tech 21 SansAmp Acoustic DI into a bunch of Boss pedals into the front of the Peavey. The MPX 100 is absolutely quiet. Most of the effects are excellent with the exception of the pitch shifter, which has a delay that renders it unusable for me. Other than that the delays/echoes are killer, chorus and flange are very good and versatile, the rotary is among the best I've used and the tremolo is nice too. The only thing missing is a phaser. What can you say about Lexicon reverbs that hasn't already been stated? If you are a tweak head then the MPX 100 is probably not going to be deep enough for you, but I get lost in the myriad of choices in processors like the TCElectronic M-One or the Rocktron Multivalve (which are excellent) so I prefer a simpler unit. I have used this unit for over 2 1/2 years and have never been unhappy with it.

I don't drag this around with me very often but if I did and I had it in a good rack case I'd be confident that it would hold up.

I've e-mailed and called Lexicon and found them to be very helpful and easy to deal with.

It doesn't matter what I play or who I like for you to know that the MPX 100 is easy to use and sounds great. I've been buying and trading gear for half of the 20 + years I've been playing and Lexicon gear never gets sold or traded. I wouldn't buy this unit again as I am soon to be adding an MPX 200 to my rack, but I will keep my MPX 100. The only thing I don't like is the pitch shifters, but then, since I don't read music (I play by ear and feel) I probably don't completely understand the theory behind using a pitch shifter to the fullest. Other than that I've ben totally satisfied with the MPX 100. Just remember, even though it's made to be simple to use, it still requires time, patience, and thought to get the most out of it. Peace.

Very easy to use. The controls do next to nothing so you won't be using them. Any editing attempts make the already miserable sounding patches sound worse. The manual is well written and describes a wonderful piece of equipment, not the MPX 100. The only similiarities between the manual and the unit are the drawings of the front and back panels.

The MPX 100 colors the sound of everything, and not for the better. I bought it to use for delay effect in my sound system rack. Could not find any suitable setting and could not edit any to get even close. So maybe I could use the reverbs for which Lexicon is famous, wrong again. I own a LXP-15 and there is no resemblance. I used to own a $29 Lafayette spring reverb in the late sixties that sounded a lot like the MPX 100. So I thought I could use it in the effects loop of my Mesa Boogie guitar amp, wrong again. The input sensitivity could not be set easily to a usable level, and it changed the tone of my guitar.

If it was not reliable, I would throw it away. Because it is reliable, I'll have to find someone to sell it to. This should be easy. There seems to be a lot of tone-deaf people giving this unit an excellent rating. PT Barnum was right.

Never dealt with them, but this unit is in dire need of an upgrade or an apology to everyone who bought one.

Lexicon usually makes great sounding stuff, but this is pure trash. They've sold a ton of them and made a lot of money, they should be ashamed. They'll not keep their reputation by trading their name for cash. But in the end it is my fault, I should know better than to buy something without trying it out. I bought on price and reputation alone. Not smart.

as easy as it gets

sound quality is excellent. nothing compares in this price range. the rotary speaker is just about perfect,I thought I had a decent rotary speaker sound on my rp2000 until I heard this puppy. literally night and day. you just won't believe how good it sounds the tremolo is also just about perfect giving you complete control of all parameters including square and sine wave variations as well as a few more. the reverb is outstanding as well but you have to sort thru about a million and one reverbs to find one or two settings that are really outstanding. but, once found, you can store it and you won't have to dig anymore. the pitch shifter blows all my other pitch shifters out of the water.( digitech, rocktron.)so it is also outstanding. chorus is pretty good but I'v seen better. not that it is bad, just not oustanding. detune works extremely well. I think it does a better chorus than the chorus setting itself. the bottom line is this: you will not find anything better than this for $500.00 and under In my opinion. As a matter of fact, you can spend $1000.00 and the difference in sound will be marginal at best. this unit stands head and shoulders above all other effect units of this type. there is no " sound floor" with this unit, you stop playing and all you will hear is dead silence. you will hear everything you play in detail with this unit. super sweet!!!the one big drawback for me is the fact you can only run a maximum of two effects at once so you will need to buy two of these units to really get the sounds out of it. but, what do you expect for $200.00? I know my search is over for the right effects rack unit and will be buying another soon.

I have had it about 6 months and no problems

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I like to play super clean sounds such as mood music and spacey stuff like that with a lot of effects and originality as well as heavy metal grunge sounds such as static x, def tones, staind, white zombie,etc. and this unit fits in with all styles unlike some of my other finicky pieces of equipment that I own.

The lack of a display panel makes it really hard to edit your user patches or know what you have once you've edited them. I got mine used without a manual, and it was basically impossible to know what sound to expect when you switch patches.

Now that I've bought a manual from Lexicon, I've managed to program half a dozen of my favorite effects for stage use - and that's all I use! The Mix knob allows me to increase or decrease the amount of effect, and the Tap button lets me set the tempo for delays.

Switching to the rotary effect, I have to turn the Mix knob all the way up so it takes two moves. That's hard to do in one beat of a song.

The sound quality is just fantastic. I play pedal steel with a stereo rig (Mesa/Boogie 50/50 power amp) and these effects are exactly what I need. The only other effect I use is distortion from the preamp (a Real Tube II).

It uses a wall wart, and since it's digital I use a surge protector. I wouldn't say that it's super rugged or anything, but it hasn't failed me in the past 6 months of use. If it failed on a gig I could play without it, so I'm not really too worried about it.

I've ordered a new manual and new knobs from Lexicon, and they were very easy to deal with. I'm not the kind of consumer who calls customer support very often, though. My rating is based on my two calls to their parts dept.

This is a real good, quiet unit. It has beautiful effects and a very reasonable price. I've discarded other equipment that didn't measure up: the Alesis NanoVerb and the Peavey TubeFex come to mind. This blows those other units away at this price point.

I'm a pedal steel player, and CLEAN effects are very important to me. I've used this unit in the recording studio and had compliments from the engineer. I'm going to move up to an MPX-500 when I get the cash, mostly so that I can see what I'm doing when I edit patches.

The convenience of the Mix control, the Tap button and the patch selector rotary switch make this unit very easy to operate on stage. I can tap in the delay tempo during the drummer's count and still catch the intro. My big ease of use complaint is the lack of a display panel.

The inputs peak very easily with lw volume. And the ouput is to low to suit my needs for live engineering.

When you can find a sound you like it can be blended rather nicely.

It is NOT the first choice of effects in my rack, but its these if I need something for the guitars.

Its ok but I think Lexicon can do better.

I would call it a "point and shoot" set-up. This is Lexicon's "budget" baby and all you do is turn the knob to the effect and do some blending adjustments. I knew it was a bare bones unit when I ordered it and really didn't want more. My goal was to get a nice reverb for my Soldano HR-50 - nothing more. For a few dollars more than a Boss Reverb stomp box, I picked up a blem unit and I'm glad I did. Everything is simple and straight forward. Take the 5 minutes required for a simple orientation via the manual and you have a great box that will be fine to have even when you upgrade.

I plan to use the unit with all my gear. The tap delay feature will be real fun with my acoustic. I use a PRS maple top Standard, a Yamaha Pacifica 904 (nice Warmoth parts), a Fender Roadhouse Strat' and a Takamine F470SS acoustic with a custom piezo and a Fishman Rare Earth humbucker. All I know is that the sounds are so good for the price, I can't wait to buy another Lexiocn unit. My original thought was to buy a used Korg RV-1000 like I had for years, but I kept getting outbid on Ebay. Trusting the Lexicon name I ordered the MPX-100 because it fit my present budget. I found the reverb I needed and so much more. I use effects sparingly, so I didn't need extreme in anything. This unit works well for me. The Soldano HR-50 head is more of a let down in the loop setup - that's not the fault of the Lexicon. I love the tap tempo feature - something I never thought about when I ordered it. My favorite pre-sets to work with are the chamber/hall reverb, the chorus/reverb and the delay/reverb. My favorite players are Phil Keaggy and Larry Carlton...even with THIER equipment I couldn't nail their sound. However, I get the sound I want for me.

So far - so good. I've only had it a week and as far as gigging, it's my only option at this point. My Boss AD-5 acoustic guitar processor has chorus and reverb so I have something to lean on for acoustic work. I have all the other effects for my electric's in pedal form except a reverb, so here's hoping the Lexicon stands strong.

No opinion since I haven't needed them.

I play all styles and this works well with them all. I'm a player of 35 years and I'm getting more demanding with each year. The Lexicon works for me and I'll stand by it. Don't waste money on a metallic sounding Boss pedal - get a fuller, more natural verb with the Lexicon and have the bonus of all the other patches too.

Good control exept for the 'tap' button that controls delay rate ect. You must either remember how fast you taped it last or hope it can learn the beat from a sound going thru it.

Great, a condenser mic and this can do wonders for your voice.

No problems

Good for folk/rock/wierd vocals. Also good for guitar, great sound

Dead simple, as long as you can refer to the manual or memorise which patches you like. There's very limited choice but the choices tend to be useful rather than not. Pure turning of knobs, a no brainer.

Here's where it gets interesting. Nobody mentioned the S/PDIF output? The thing is, this is some very good chips coupled with some _very_ cheap analog parts in a little case for really cheap. The potential is amazing but you almost have to mod it, and it's a bitch to mod: all wave soldered parts. The input and output caps are awful and undersized, and this causes a lot of the complaints about 'tanky' sound: they're eating all the bass authority which gives rooms a convincing size and weight, and they sound cheap. I replaced these parts with big .39 polypropylene film caps and the sound became _much_ bigger and better.

Once you get past that stage (or if you don't care anyhow, or can't do difficult gear mods yourself) it also must be mentioned that this unit is potentially _the_ hot external A/D converter for an engineer on a budget. You can mod it, and the external wall wart power supply makes it possible to put some heavy RF chokes on the power supply cable to further sweeten it and clean it up, and the input gain is potentially really high- like 'mic preamp' high, at full crank. All you have to do is hit the bypass switch ('why a bypass?' This is why) and you patch the A/D converters straight through to the S/PDIF out. You then run that to your computer or recording device (direct, or with a cheap RCA/optical converter) and bam: instant dedicated outboard A/D converter for insanely cheap if you've ever priced those out. Even stock it's gotta outperform just about any soundcard stuck in the noisy environs of a PC- especially if you are running an optical cable to avoid the PC's noisy ground.

That said- I do like the reverbs, and especially the 'tape' delay effect. I can see why a lot of people disliked the tone of the thing- I had to fix it with mods, after all- but inherently this _is_ a great sounding unit hobbled with really really cheap parts. I give it an 8, stock, and think it's an easy 10 if you can upgrade the coupling caps.

Haven't had any problems- nothing to report. I haven't worked with enough Lexicons to really render an opinion.

I do like the company, both for making great reverbs and because I read a Usenet thread in which someone was asking about the S/PDIF- and it turned out the Lexicon people had designed it from the start intending to get 20-bit outboard dedicated A/D converters into people's hands! They built it with the intention that some people would use it just as a converter. I think that's very cool. I also think I've kinda obliterated any warranty I might have had, so it's a bit of a moot point for me...

I think I held off on this for a while, not wanting to reveal how awesome this unit is for the price (especially if you are very good with modding circuits). Then I realised, most people won't be doing that, and anyway there are others helpfully saying 'nah it sucks!' and keeping the price down, so I figured I'd chime in. I only found out about the A/D converter trick today- I'd pored over this thread when deciding to buy it and nobody'd mentioned that use. I can say this: I have rarely been so _delighted_ as when I realised that, not only did I have an outboard A/D converter already (I'm getting ADAT/edit and wanted something to mix ADAT down to that wasn't an ADAT converter), but it was the Lexicon that I'd taken apart, spruced up, and which I've been deliriously happy with the sound of ever since. Sort of discovering wonderful unexpected talents in something you were already completely happy with, and that you trusted a lot. So my overall rating is 'yeah!' but if you are a techie geek and comfortable modding tricky circuits (not _that_ many of us) then this unit is a 'Freaking YEAAAAHH!' because it's a _moddable_ dedicated 20-bit A/D converter as well as a neat reverb (and of course you could use it as the converter and sweeten things with a bit of reverb, which would give the digital output 24 bits of information to send to your PC)

So add me to the 'yay Lexicon!' crowd. I admit it ships with some cheap parts- but the _guts_ of it are solid, and the price can be _so_ good. As I speak there are a bunch on eBay not getting any bids at starting prices of $100. You could add an $80 RCA/optical adapter (overkill) and that would _still_ be a terrific price on a 20 bit outboard A/D, never mind reverbs. It's like the old VW Bug: it's not a Ferrari or a Rolls-Royce, but you can end up loving it possibly more for what it is and how unassuming the price was...

Email withheld because I'm afraid of getting mobbed by people who want their 100s modded! O_O

Very easy.

Sounds are good BUT - and this is a huge problem for me - it adds a noticeable delay to the signal. I bought it as an effects box for my electronic drums. When I first got it I loved the sounds but something felt wrong to me. I kept noticing I'd start slowing down and felt sluggish. Also, when I had the wet/dry set all the way to dry something sounded weird.

Turns out there's a tiny delay in the signal path. This causes two problems. The first is phase cancellation when I use this with my mixer's effects send and blend it with the unaffected signal. The second is that the delay screws up my timing. Now you wouldn't really notice this second problem unless you were a drummer monitoring yourself through it. Play a roll through it and it just feels wrong. For guitar, keys, or singing the delay isn't noticeable.
And I don't really hear it when I use the sequencing in my vdrum module and add MPX-100 effects in later. So the delay may not ultimately matter to you with respect to the timing.

But the phase cancellation is a bigger problem. Unfortunately, even when there are no effects - ie, fully dry, the delay is still present. That's where I really noticed the phase cancellations around the snare drum range. When set to Wet, it's not that big of a problem because the effect sound hides such subtle detail.

So as a main effects for my drum rig, this box is useless. I still use it but not with my effects send. I just plug it in between a microphone or keyboard and my mixer. That way the phase problem doesn't surface.

BTW, I also have a midiverb 4 and have connected it in exactly the same ways. There's no noticeable delay or phase problem so it's not my setup. (a few other people noticed it too on their own setups)

seems well made. Should last forever (unfortunately)

Hmm. I tried contacting them regarding this problem but never got anywhere.

I'll say one positive thing about it. I love the infinite delay and reverb settings. And the pitch shifts are fun to use although perhaps not as musical as they could be.

But for me, this ain't the device and for the time being I'm stuck with using my Midiverb as my primary delay.

I bought that when one friend said that now we have pro-effect with amateur-price. I have liked this because easy to use. First set input and output, then mix for wet(connected for mixer). Then only set type of effect and memory number and let's dance. Storing is also easy and tap-tempo gives an opportunities to make fast chances. Only thing I miss comparing to my old reverb is some kind of ledtable. Input, output, help for editing etc.. And of course common problem: is this on or off???

I use all kind of reverbs: room, hall, spring, ambient, gate for vocal, backvocal and guitars. I use five different reverbs in vocal and I'm happy for quality of them. Sound is clear and pre-delayreverbs doesn't slap too hard. Only thing I don't like is unpossible to edit some parametres. Sometimes it would be nice have strong start in reverb and light end. Just one special type, but I haven't find it jet...(this is not murmuring but reality in this price)

Many times when I have chanced sound, newone disappear somewhere. No reverb! Don't like.

Never done

We play finnish traditional dancemusic, guitarmusic like Shadows and some 60's like Beatles and CCR. I like MPX100, but as audiofreek(<-- don't know how to spell) I always want more. I will buy new reverb in future, but if I want better it have to be lot of more expensive. Next I will connect MPX100 in my computer and that might be key for my problems. Maybe?

Very easy to use (however I haven't attempted MIDI functions - really no need). The "Tap" rate is great - dialing in milliseconds is not my idea of a good time - especially for live work. The Manual is good, with subtle hints what the different effects can do & how they've been used.

Like most of these things, it's easy to make them sound terrible. A LOT of reverb settings sound like barf; however, if you're willing to experiment a bit you can find some quite nice settings (I guess that would make a case for using the MIDI functions - once you FIND a decent reverb or two the settings could be saved as the default, instead of having to remember "on setting #5 put the knobs at 10 and 2 o'clock". The echoes are really nice with the tap rate feature. The combination FX (like Echo + Reverb (or Chorus)) are real handy - one FX unit for 2 FX. My kids LOVE the Pitch Shift (this baby spans serious octaves!) - great for Halloween fun! I haven't used the unit for "fussy" studio work, so it's always been plenty quiet for my mostly "live" applications.

Unfortunately, it went flakey a few months into ownership until it finally went brain dead. Lexicon support was great & turn around time very short. Unfortunately again, the unit started its flakey tricks right away (it wouldn't always "boot up" - but after 2, 3, or 12 tries it would power up and work right - for a pretty good while - then lock up.) It screwed me at 2 gigs (fortunately I had alternatives) - so it logged some serious dust collecting duty. I'm sending it back for non-warranty repair because when it worked it was a really nice unit and it's cheaper than buying another one.

The people in customer support are top-notch! They really DO return phone calls. As for my repair not lasting - hey, intermittent faults are a real bear. Had I been timely in beefing about it (I let it collect dust over a year) they would have made good - no problem. I've got no complaints.

I use(d) this unit mainly for live work - everything from Country to Metal to Blues to Classic and all points in between and always found the MPX100 able to sweeten, enhance, open or in some noticeable way contribute to the material. Obviously no one likes showing up at a gig with a dead FX unit or having to coax the the back to life several times during the night, but from other reviews I gather this is NOT the norm. Other gripes: I hate wall warts, which this thing uses; Other than that, it's a great unti for the money.

Pretty easy to use. Not too many knobs!

OK. Here's the complaint. I checked the reviews here and sound quality looked alright. I have an earlier PCM 60 that's kinda hissy so I thought I'd step into something newer. Very quiet! But wait a minute. I use reverb in a studio for vocals or drums, usually a plate setting, not for the occasional trick special flange delay wild echo gimmic thing........ and I have to say it's really lousy reverb. So clangy on a drum kit. totally boosts the frequency the kick is in in a totally unnatural fashion. I would say it's not as hissy as a nanoverb but just as fake sounding. The PCM 60 when added makes it sound like a kit is in a real room, & this one sounds like it's in a transistor radio. I hate to say it about a Lexicon product but if you're recording think twice about this thing. (If you really want some natural high end reverb put an aux send to a speaker in your bathroom and move a mike around. Oh my. After that even the PCM sounds like a box and now the MPX is for sale.......) Frustrating that so many others have reviewed this unit and loved the sound. How about that. I guess we're all different.

Never had Lexicon stuff fail.

Never needed it.

Been playing 30 years and recording for 20. Co-owned a 2" Studio for awhile & now use a Mackie board (very clean.. little or no coloring) and DA-38s. The verb on the MPX couldn't hang with the fidelity.

It's pretty easy to use in concept, however the print next to the preset knobs is very small and difficult to read, especially in a low light situation. There is no LCD display as mentioned in the previous reviews. Despite the relative ease of use, I find it difficult to get usuable sound quality from this unit. There's just not enough control over the requisite parameters to really tailor the sound.

I've used this with an Evans AE200 amp, and a Trace Elliot Bonneville C50, and a Howard Roberts Fusion III guitar. I find the reverbs on this unit to be totally unacceptable. They tend to sound very tanky and unnatural. I've had this unit for about a year and 1/2 now and I've yet to find an effective use for it. The range of presets are really not very usable and the control over the presets is very limited. I have an old Alesis Midiverb II whose reverbs sound much more natural than the Lexicon's. I've been playing for 35 years and have owned a lot of gear in that time, so I'm not a newbie with this stuff. I also know another player who uses the MPX100 in his rig, and he suffers from the same tankiness that I find in the unit. It's really a rather annoying sound in my opinion.

Seems well built, never had any problems with it.

Haven't dealt with them at all.

I primarily play jazz, and this unit just doesn't provide a natural reverb sound, it just muddies up an already pristine sound. I wouldn't buy it again, I would definitely look around for a better sounding unit. There's nothing I love about it, and I hate the small printing on the front and the need to access the manual to find out what the presets are under each category. Come to think of it, I pretty much hate the unit. I bought it mail order based on the glowing reviews I read here in Harmony Central. Gotta say, I don't agree with them at all. I've tried finding a use for it over the last year and 1/2 and I've decided it's pretty much a waste of good money.

Very,very easy to use,indeed....the layout makes sense,and the manual is very neat and informative.A little short on editing,though,but what can you expect at this price,it's a rel bargain...

I'm using it as an external reverb & fx unit for my analogue synths,and also,to replace poor reverbs from more modern synths samplers and modules...It's by far,the best sounding reverb under $600 ! OK...It's not 480L or 300L (which I also own),but the difference between this little guy,and MPX-1,and even PCM-80 is minimal.This unit really kicks ass...It's not absolutley quiet,but It's pretty clean sounding,especially reverbs and delays.And effects are all very warm-sounding,particullary reverbs,again...

NO PROBLEMOS,as with the other Lexicon gear I own,or owned

professional,and friendly people....

I'm doing a lot of house,techno,and other dancey stuff.These are all big and comercial projects,and I can't afford to have a bad sound in my productions,the MPX perfectly fits the bill for instrument processing,but I wouldn't dare to put the lead vox thru it,becouse I have some more serious gear for that task (eventide dsp 4500,Lex 300L,Yamaha Rev5,TC 2290 etc.),but if you use it as a second or third processor,it does the job,perfectly!In comparison with other similary priced units,I find this one has no match.It oozes quality,right from the start...reverbs are very good,indeed,and in comparison with Alesis Quadraverb 2,for example,it sound much more polished and the overall sound quality is better.Thumbs up for this one,Lexicon...

nice sound right from the start when i plugged it in...the nice thing about this piece of gear is there's no on or off switch! editing patches are reasonable, only 16 though which is not enough. The manual is very user friendly.

I hooked it up to my drum machine and started tweakin delays and reverbs up the wazooo. It gets clipping if you boost the level too high but it sounds fine in halfway area. The sound of the effects are great...especially the ambience, reverb!

Reliability was a factor when ever i buy anything and so far this has been a kick ass investment reliability wise. Ive used it at many shows and its all talk but more show!

As long as i live i will only buy lexicon effects they are the best to own...theyre all that and a bag of chips

Fairly easy to use. I have recently bought a didgtech studio-200 along with this, if your are looking for a low-priced effects processor, read this review. The lexicon manual is well done and thought out being spiral bound and all, the digtech is not. Having only a few nobs on the lexicon is actually, in my humble opinion, a blessing. Not many musicians want to spend hours "dialing in" the perfect sound, we would rather spend our time playing. The "Adjust" knob does that, it changes a couple of parameters at once, so you can dial in a sound faster. The sound out of the box is subtle,(which most reverbs should be!) but very good. The digitech is more varied in its sounds but most are not near as good.

I am running a semi-pro studio and needed more effects units. I run it through my effects sends and get good results. The unit seems quiet, BUT if you take it out of the loop, there is a subtle difference. Most of the effects sound sweet to the ear, subtle but tasty. The digitech s-200 effects are more outrageous, with the ability to get out of hand(annoying). I do wish the lexicon had an input meter instead of just a line & clipping light. The digitech has a meter. AND.. & this is big AND, it will take some time to get used to the fact that the lexicon does not a LED display like the digitech. I'm sure this lowers the price a bunch, but do not dismay, the unit produces good sounds and can be fairly quickly accessed. Just because the LED is not there calling out to you, assuring you that patch #145 titled"my stupid ass song" is there, this unit kicks much butt over the digitech.

Very dependable. Never burped once. Sure i'd depend on it, because it likes me. SAme with the digitech

Been searching for a company that picks up the phone with a person, not a machine. Still looking....

I record almost anything decent. I LOVE THE TAP TEMPO BUTTON!!!! great job lexicon. nice layout too, easy to dial in sounds. LED would of been nice, but it probably would have knocked the price up some. Digitech has a nice LED, Hmm... not much else.