Behringer K900FX

Actually it's not worth talkin of the features, because I never had the chance to actually play this amp long enough.

I'm playing a Nord Electro and baught this amp to have a small back-up amp. Firstly the sound was pretty o.k until it made a strange oscilating noise at high gain that got louder every time I turned it on.

Absolutely unreliable, I would never ever take it again to a gig. The amp broke down twice and was falsy repaired and still not working correctly. Still noisy and making this oscilating sound.

Zero, absolutely zero. As a German living in Thailand I'm very disappointed about their customer treatment. As I said above, this amp worked o.k for two month and then made a noisy oscilating sound. It was shipped to Behringer in Bangkok to be repaired. After two month I received this unit back and it worked another month until it was making this noise again. One more time shipped to the dealer in Bangkok. After 2 month I got the amp back with a bill attached to it: CHANGE OF LOUDSPEAKER 1500 THB. I had to pay this bill even it still has more then 5 month guarantee left. Contacting Behringer abroad didn't help much either, they refered me to the incompetent dealer in Bangkok. I used to like Behringer, now I just think they're ripping people off, especially in third world countries - where people have to pay two salaries to get this amp.

Having this amp now almost 8 month. I was only able to play it two month, the rest of the time it was in repair, at the dealer, or in the music shop being prepared for shipping or repairing.

2007 model Behringer K900FX keyboard amplifier. Not a guitar amplifier, but harmony central doesn't have a section for Keyboard amps. I play punk inspired, electronic, ambient experimental rock, prog and some jazz. So far, it seems to cover my stylistic bases pretty well. It has a good clean sound and flat response (unless shaped). Excellent for most synth sounds and organs, good for vintage electric pianos and acceptable for acoustic piano. Let's face it, most amps are just not up to snuff for acoustic piano stuff and I've used all kinds of keyboard amps. It has three channels controlled by an on board mixer, built in effects with a send on each channel. Also a handy EQ section with what appears to be an output warning/limiter thing. There is a headphone jack, sub woofer out, channel out to go to a PA and an input for each channel, as well as three prong mic input on the first channel. I use the amp for rehearsal and monthly performances. I play in a ROCK/NOISE band and we get pretty loud, even at rehearsal. I put the amp up on a stand and turn it up just past half both on the channel and on the main and it is plenty loud. In performances if there is a PA (bigger venue) I would only use it as a monitor. In smaller performance settings without a PA it seems to project just fine on a stand. I hate to carry giant amps and this one is of reasonable size.

I use this to run my soft synth and keyboard plugins via a 24 bit sound card attached to my laptop. I play with a midi controller keyboard as well as use some on board keyboard sounds.I play punk inspired, electronic, ambient, experimental rock, prog and some jazz. Good for synths and organs. Fairly good for vintage electric pianos and adequate for piano. If I played piano sounds a lot and had to have the kind of acoustic piano sound that was flawless I might consider another setup. Honestly, I'd have to insist that I have nice acoustic piano at the venues I played.

When cranked you do hear a hiss. Seems to mainly come from the input channel.

It has some built in effects that I've only used on vocals when there is no PA. They aren't the best quality effects I've ever heard but it is nice to have them just in case.

Overall, you get a pretty good balanced sound out of this inexpensive amp.

I will repost should this go terribly wrong. I purchased a two year warranty because I've heard that Behringer has problems with durability. I really can't afford a backup at the moment. If I went on a big tour I'd bring an extra amp no matter how good of an amp I owned. Also, so much of my sound is dependent on other portions of my set up that whatever I am using doesn't need tons of character.

2 year warranty. No service needed yet.

I've been playing synths and electric keys for over 20 years. I've owned an old Fender keyboard amp with spring reverb, a Rolanc KC series, PA speakers and bass amps to play keys. I've owned a Juno 6, Moog Prodigy, Crappy Casios, Crappy Yamahas, Alesis QS, DX100, AN1X and various controllers. If it were lost or stolen at that low price I'd buy another. Love that it has 3 channels and a sub woofer out. Hate that everyone laughs at me cause I own a Behringer amp! ; ). I compared it side by side with the Roland KC150 and 350 (owned a 300), Peavey KB4 and Alesis Sumo 100. The Roland had some more punch but I've always felt they sounded brittle/digital, especially on certain keyboard sounds and at nearly twice the price, I winced. The Alesis was pretty loud but not that balanced, as was the Peavey. When you get up to the $1200 plus range on keyboard amps there is a pretty big jump in quality. For $600 and less it sort of depends on the features you need and the type of playing you do...