Lexicon MPX 100 Dual Channel Processor

Very easy to use.

For the money it is the best, no comparison.

Looks to be very well built, some complain about no power button - but it is one less thing to break!

N/A

This is where I complain. It sounds good, for the money has great midi control - even tap delay!! But when you combine Delay and Reverb together you can not adjust the Delay feedback. It is set at approx 30 to 40 %. You can have no more or no less!!!!. Now if you use just the single delay program (no reverb or anything) it has great adjustment controls. Common sense tell you that when one uses a processor with delay - they want to use the reverb too! Another example is the tremello. Sounds great! but you cannot combine it with reverb! (or anything elese) This would have been the processor for me if they would have let you still adust things when you combine 2 effects. I would have spent the extra for that. I ennded up sending it back after a week and bought there MPX-1 @ 900.00 for more adjustments.

Well... This unit has 7 knobs and 3 buttons... So it's, well... Very easy to use it. Lexicon has made an excelent simple manual for it.

I'm using it in my home stuido, as an rack effect... Is it noisy? well, I also have a Behringer Virtualizer... Compared to that, well... hehe... It's NOT. I use it in my keyboard setup. But I also use it when I play the bass in a band. For that kind of use, it is allright. If I Should pick out one effect that donsen't work very well; it would be the Picth. In my oppinion the best effect is the Delay, Echo.
I would give this unit an 8 or 9 in soundquality, but thinking of the prize! well... 10...

I would Surely depend on this one... The only minus is that the Powersupply is external !!!! This is not nice...

haven't had any trouble with it so far...And I don't think I ever will.

Almost Fantastic value... I don't know if I would buy this unit again, 'cause the technology makes the reverbs better and better... And the prices lower and lower! Well... I would properbly buy another verb. Maybe ever a better verb for the same price!

This unit is extremely easy to use, all of the controls are right on the front panel for you: input, mix, output, effect balance/level, adjust, store, tap, 2 rotary knobs to select your sound and to hear any one of 16 possible variations of that sound. There's no LCD display or anything like that- its also pretty small and extremely light- like only 2 lbs, I think. The unit is true stereo so you its got mono and stereo inpus and outputs, as well as a S/PDIF output, and a footswitch jack on the back, of course Lexicon doesn't give you one, the nice guys that they are. The manual covers everything you need to know if you can't figure it out. Total presets are 240 with 16 user sounds availble, that may sound limiting but all of the presets are fantastic. One thing that I thought was bad initally before I bought it was the fact that you can only have 2 effects at the same time but I don't even notice now.C'mon- do you really need 10 effects at once? Didn't think so. Anyway the sound quality is superb. I focus on quality rather than quantity.

The MPX-100 sounds absolutely amazing! Its dead quiet as the previous reviews have stated, no noise or hum or buzz comes out of this unit, even it you get it to clip. Its got 24 bit DSP processing, 20 bit A/D and D/A converters, the SPDIF, and its stereo! Where do I begin? First settings are hall and plate reverbs I think which are by far the best things I ever heard. It completely destorys other units that go for atleast 5 to 6 times as much. Nothing in this price range compares. You can get some subtle reverbs or make it sound like your on stage in a huge venue or amplitheatre. There are so many variations of sounds too plus you can mess around with it with the adjust knob and mix. You really do have a lot of control over the effects. There are also some amibience effects- subtle and nice- you can get that great short delay/reverb sound like on George's lead guitar part in the Beatles- "She Came In Through The Bathroom Window," or an Echoplex-ish sound like "Another Brick in the Wall pt 1." Delays range from ultra short to super long delays- you can get over 5 seconds of delay in mono and about 2.7 stereo. My only complaint with delays is that you can't get exact delay times, the tap button only gives you certain delay times, for example it will only go up by certain incriminets but still you can get most anything you'd like. They sound very natural and not overly "digital" at all. Next you've got chours sounds which are awesome- many variations- very rich, full, and lush- best I've ever heard- its destroys and Boss pedal you've ever played on. During the adjust knob all the way up gives you a very fat, thick chours sound- you can get some leslie sounds also. Next is flanger/phase- its sounds very good, not like an MXR pedal but its got its own personality- I can get that Alex Liefson-Rush lead guitar sound easily. Very rich and natural sounding. Tremolo effects and rotary speaker simulation sounds dead on- like your old Fender tube combo amp. Yes, like the previous review stated- its cool that you can move the adjust knob quickly and its will slowly catch up, again making it that much more realistic. Finally we've got pitch shifting/harmony- which I think is very good. Better than Rocktron Intellifex. Most harmonies sound natural and it will keep up with you even during fast playing. It is not intelligent unfortunately but still very good. If you could select which key you wanted to play in then you'd be set. You can get some wacky, strange harmonies like minor seconds and things like that- trying doing some tapping with that- its sounds so retarted! Octaves are dead on, not too digital sounding. You can go up or down like 3 or 4 octaves or certain patches- really weird. There are many sounds that have combinations like reverb/delay, chorus/flanger, pitch/reverb, etc. I use this with a Marshall 6100B 30th anniversary head into a Marshall 2x12 cab with Celestion 75 watt speakers. Initially when I got it, I hooked it thru the FX loop and I noticed that it had some tone coloration when you bypassed the MPX-100. It wasn't that apparent on clean settings, but definitely when you kick it into overdrive. Its sounds like it cuts the highs and makes the mids and bass more apparent. This isn't necessarily a bad thing but I didn't like that it messed with my tone. However- when I hooked it thru the line input into my Kittyhawk Quattro tube preamp, its sounds amazing. I'm using with a Gibson Les Paul Standard ('82 model w/Khaler trem), Strat Plus with Dimarzio fast track 2 in bridge and gold and blue lace sensors, and a '75 fender mustang. I also use a vintage EH small stone phaser, vintage big muff (modified it), Zoom Driver 5000, Boss EQ pedal, and Crybaby Wah. All the guitars sound really nice with it. The sounds you can get all sound really really good, best I've heard and this is very inexpensive. Definitely check it out if you're in the market for an FX processor. I've owned zoom and crap like that and it just blows them all out

Only had for about a week but very solid construction and seems very reliable- I'd gig with it without backup.

Never dealt with 'em, hopefully I never will.

Like I said, its amazing, best thing I've ever heard or played on. Sound quality is awesome, all patches are good and usefull no matter what style you play. I can now nail almost any sound I'd like. You must do yourself a major favor and check this unit out before you blow 5 to 6 times as much for something that isn't as good. Lexicon has done it- make a high quality unit at a very affordable price. Hats off to ya, Lexicon, keep up the good work!

You can't get much easier to use than this. Check the other reviews for more details, but basically two rotary knobs to select the patch, two for adjusting the sound and three for input, output and wet/dry mix. There isn't much to explain about this unit and the manual is adequate. Everything this baby does sounds great.

I use it for keyboard effects. It is completely quiet, I can't hear any difference between in-ciruit and bypass. You might think it's a bit limited because you have to use the preset effects, but with 16 variations of 16 basic single and dual effect patches, it's got all your basic effects needs covered.
It sounds great! I couldn't believe how much better it sounds over my alesis wedge. For a $200 effect rack, you can't go wrong with it.

It seems as solid as any modern piece of gear. I'd gig with it.

I haven't dealt with lexicon so i can't say.

This is by far the best value for rack effects. I'd buy it again, in fact I might buy another.

Get or borrow a Nanoverb. Use it alot for months if possible. Then when you buy this unit you won't be freaky about not being able to see the patch number. If you have a controller with a readout that will give you a little more security. Very easy to use.

The others have covered this completely. I do however get noise when running mono thru an effects loop (I'm using tube amps), but compared to most other stuff out there it pretty quiet. Nice sound. I tried it thru all my Fender amps without a problem. High gain amps may get a little quirky. (noisy). Just watch how much input signal you give the return.

Hell if I know. I would use it without backup because I like to play and my sound isn't dependent on a bunch of processors. I would bring a spare amp and guitar however.

No idea.

If you're low on cash and don't need midi, go for a Nanoverb. Otherwise buy this. I could afford to spend alot more but another $500 bucks won't make me sound any better. I am running it mono and it is still impressive. The ASIC guy and designer that put this together deserves a raise. This is a real thing, not a toy.

This unit is very easy to use. It has seven knobs and three toggle switches. Lexicon has thoughtfully designed this unit so that it's power may be efficiently tapped with a minimum of learning overhead and general interface hassle. The manual is excellent and thoroughly covers every aspect of operating the MPX-100. This is nowhere near as difficult to use as the average multi-effects processor on the market today. At the same time, it's not as "tweakable" either, but all the sounds are very usable without requiring much tweaking.
Unfortunately, I have to deduct two points because of the annoying attempt to be more "user-friendly" by allowing users to modify delay times only by using the "Tap" button. This is totally inadequate for someone requiring precise delay times.

I use this in a stereo guitar rig. It is ABSOLUTELY DEAD QUIET. NO NOISE. NONE. I have listened to it through professional headphones which have a flat EQ response from 10 Hz to 20 kHz and it really is beautifully silent. I believe the lack of noise may be attributable to the fact that it has uses an external wall wart instead of having the power transformer inside the unit. While this design is somewhat cumbersome compared to the alternative, the compromise is well worth it since silent operation is one of everyone's top priorities, especially those who plan on using this in a studio application.
The reverbs are simply outstanding. While designed to sound realistic, there are some huge-sounding and awe-inspiring reverberant spaces and even a couple of alternative reverb programs (e.g., the "Infinite" "Special FX" preset).
Choruses and flangers are both excellent and sound rich, warm and analog.
Delay is good (up to 5.5 seconds in mono and 2.7 in full-bandwidth stereo).
Pitch shifting is not very good. It's almost unusable because you can hear the processor chugging along and glitching subtly as it continuously scans the sampled input, something I've heard many lower-end pitch-shifters do also. No diatonic, chromatic, or other "intelligent" pitch shifting here.
The tremolo and rotary speaker emulations are very, very good. It's easy to get a Sevendust type of sound (a 100% wet square-wave tremolo) out of the unit (you must provide the crushing distortion, of course). I was really impressed that the rotary emulation presets even retain the inertial lag inherent to real Leslie-type rotating speaker cabinets (i.e., if it's spinning slowly and then you abruptly turn up the speed of rotation, it won't discontinuously jump up to that speed, but rather will catch up slowly due to the rotational inertia of the mass of the spinning speaker).
For the price of the MPX-100 I have no choice but to award it a '10' for sound quality. This is the way it should be.
For the record, I own an Eventide GTR4000 and have spent many hours using T.C. Electronics processors. Even compared to those high-end units, the MPX-100 holds its own.

It's a small, lightweight unit with a surprisingly thin profile for a rack-mount piece of gear. It feels solid to me. The cord for the wall wart would probably not endure much abuse before breaking though. I haven't had the unit long enough to rightfully comment on it's reliability.

Lexicon has very good customer support. Yes, I have had (albeit limited) experience with them. They have a good reputation and they deserve it.

If you need a truly excellent reverb / multi-effects unit and you can afford to spend a mere $200.00, stop reading this and GET ONE NOW! It blows all other sub-$1500.00 reverb units that I've used away, and that ain't no jive. I've compared it to DigiTech S-100 and which didn't hold a candle to the features or the sonic integrity of the MPX-100.
Pluses:
- true stereo throughput - left and right 1/4" inputs and outputs
- MIDI controllable (e.g., you can do whammy pitch-bending in real time with a MIDI continuous controller, or execute patch changes remotely, for example)
- unbelievable price point for a unit with this sound quality
- did I mention the price?
- true 20 Hz to 20 kHz frequency response - you can trust this baby won't mangle your tone
- the interface is so simple, even a drunk hillbilly could use it
- configurable bypass / mute
- 20-bit S/PDIF digital output with RCA connector
- 2 x 2 meters to let you know when you're overdriving the unit
Drawbacks / design flaws:
- no XLR input or output jacks (bad, . . . very, very bad)
- no power switch (What the hell were they thinking there???)
- the "Tap" button (which is the only way to set the delay time) isn't nearly as useful as a knob, it's too imprecise

This box must have been designed with "less is more" in mind. The 240 factory presets sound fantastic as is but if an adjustment (outside of Input, Mix, and Output) is needed you only have two knobs, Effects Lvl/Bal and Adjust, and a button, Tap, to mess with. Adjust effects only the essential parameters of a given patch, which makes it extremely easy to dial-in great tones.

I am primarily using the MPX 100 in the FX Loop of my guitar amp. This unit is very quiet as long as you keep the input level below clipping. The Plate, Gate, Hall, Chamber, Ambience, and Room reverbs sound terrific, not harsh or fake. The reverbs are the main reason I bought this unit. Here are my impressions of the other effects the MPX 100 offers:
Tremolo - warm, accurate but not digital sounding Rotary - Not very realistic but certainly usable Chorus - Two excellent and distinctly different voicings one subtle and lush, the other out-of-phase and resonant Flange - Not like an old MXR pedal, my favorite, but still usable Pitch - Not intelligent pitch shifting but again very usable Detune - From subtle, my preference, to over-the-top Delay - Not much control but well designed and great sounding patches Echo - Very warm, great Tape Echo simulations

I've had no problems with it for the long week I've owned it. I really can't comment on this topic yet.

I did request some operational information from Lexicon through e-mail. I received a response the next day. Although this in itself doesn't warrant a high rating in this category, it certainly bodes well for Lexicon.

Yes, there are some limitations in this box, it only has 16 user patches, no digital in, and only a few combinations of effects. With that said, it is still a fantastic value. I don't think you can beat the reverbs alone for this price. Throw in some really nice tremolo, chorus, and echo and you've really got a deal!

If you've got a thumb and forefinger, you've got this thing figured out. Its shweeet. The manual is nice for figuring out what parameters can get tweeked but you can get by w/out it.

Oh my God!!!! It can't be true! I'm telling you I don't see why you'd bother getting anything else in this price range. I'd recommend getting 2 or three of these things w/ a compressor and your setup will be singing. You'd be surprised what you can do w/ this thing even though its only 200 bucks. There's no possible way you can convince me anything comes close. Believe me I've heard them all and for this price point you normally pay about 2 to 3 times that for the quality of sound. Granted your stuck w/ less programmability (which was a major concern of mine) although I promise you'll be quite satisfied. Also, its MIDI! that kicks ass.

It isn't broken yet.

No need at the moment

As mentioned, I'd pretty much throw anything else away under $300 bucks once you've had this. I'm planning on getting maybe 2 more for my recording studio. If it were stolen or lost, I'd get a new one w/out hesitation. I'm sorry it doesn't have more programmability but if I give that up for price, I'm willing to make the sacrifice.

Pretty easy to use... 7 pots... 3 buttons! Read the manual and you're set!

Hell... this is the BEST cheap reverb I ever heard!!! If you want a good cheap reverb, this thing is the best you can buy... in fact... in a mix... I don't really see the difference with a PCM80 for example...

Got it 10 minutes ago... but it's Lexicon, so I guess it's good :)

dunno

This effects processor is WAY better than the older Alex and Reflex... in fact, it's closer in sound quality to a pcm80 than to an Alex... just buy this unit!

It's been said before, this one is very easy to use.

I tried to get this one to sound bad by turning the input level to it's maximum, but it produced almost no noice at all. You can't get this unit to sound bad. I still haven't tried this unit enough but after 12 hours I'm in love with it. It's an awesome piece of equipment considering it's price, well even if you don't consider the price. I was just about to get an LXP-15 and I'm happy I got this one instead...

It looks and feels reliable, and since I don't have to rely on it I would go without a backup, if you don't go with a backup for some piece of equipment that you can't be without then you're stupid.

Haven't dealt with them yet...

I play mostly industrial music, pretty much like Ministry and then I play gothic. I'll use this one both for singing and for my guitar. Well I'm too lazy to write everything that I love about this thing and before I bought it I was a bit puzzled because som guy gave this piece a "1" in sound quality. I bought it anyway and, well it's too good for it's price.