Behringer Ultratone K900FX - 90W 12" Keyboard Amp Reviews

If you are looking for a keyboard amp this is the best , I am so happy with mine thank you sweetwater 5

I've bought my Behringer Ultratone K900FX here at Sweetwater about a year ago to accompany my Roland keyboard for home use. I was mostly happy with my Roland keyboard buy it's small internal amp & speakers just didn't due justice to bass in the bottom octave. Adding this amp made the keyboard sound much more like a real piano, giving it strength and power everywhere in it's range. I don't think you can go wrong with this piece unless you need something larger and much more expensive for stage use.

Simply the best!!

As I told my sales dude Jeremiah (who rules btw) this amp is amazing. I plugged my Cobalt 5s synth in, cranked the amp up to about 4, kicked the synth to its lowest octave range, and was completely blown away by the sound. Perfectly articulated and not boomy in the least. Then I plugged in my mic and blew saxophone. Again, amazing sound. If you're playing at home, or if you have a home studio, or playing a club, this amp is the ticket. For jamming, using it as a stage monitor, or for just practicing, this amp is fantastic. Quite unbelievable really how much you get for the price. And I've just begun to explore the effects. So glad I snagged this!

I needed something that didn't weigh a ton. I have a Roland KC 600 and A Peavey KB 300 and they're both way too heavy for small gigs. This Behringer is perfect. Easy to haul around and the real selling feature for me was the built in effects. These amps get used for Keyboards, Bass Guitar and Accordion and having the built in effects for accordion sold me. For my purposes this sounds great and fits the bill.

Unit works great and has a lot of options that other units don't have, i/e a microphone input as well as several other input jacks.

Great range. Beats plugging into a guitar amp by 1,000%. I do hear a lot of "turn it down a little" from my guitar band mates, so I think it's doing a great job! Also nice to plug in electric drums because they need the range too. It's heavy but packs a punch!

Just for ***** and giggles I decided to run my vocals through my bandmates ultratone one night a rehearsal. I was blown away by the clarity and tonality range that I was getting through this keyboard amp. I found numerous effects that worked well with my vocals!! This amp just for vocals alone is better than any vocal effects pedal I've ever tried! Not only that this amp has made a great acoustic amp and portable pa system for weddings, private parties and any gathering where you need to be amplified. I now use run my vocals through this 100% of the time at rehearsal and gigs!! After stumbling across this diamond in the rough I decide to look at other keyboard amps to see what they offer and continue my journey looking for the ultimate vocal tone but nothing else out on the market has the effects and the quality this unit has at a price that is even close to this. If you are a lead vocalist or even just a backup vocalist or someone who plays acoustic gigs and sings, you have got to try this mini PA system!!!

I started with an active speaker as my keyboard amp, and it was okay. It overplayed the bass end of the notes even after I tweaked the e.q. so I knew I needed something else. I had used a Behringer active speaker with a previous keyboard and been impressed so I did a little research into this Amplifier, and Wow, I am so glad I pulled the trigger. I spoke with Ryan My Sales Engineer at Sweetwater and he was full of good information as usual.
The keyboard sound has come alive, no more muddliness in the bass just clean, clear, crisp sound.

Makes me a very happy Keyboardist!

I have owned this amp for several years and it works great for keyboard but it also works great for guitar especially classical guitar. I have a fishman loudbox 100 , I have an ultrasound acoustic amp, I have a tech 21 power engine and none of them produce the clear, full, deep sound of my acoustic guitars. The effects engine is quite good. It takes pedals very well....it really is a super versatile amplifier and the price is just incredible....

I really like this Behringer Ultratone K900FX! It brings out the full sound of my Roland DS61, the EQ, FX, and overall the versatility it offers. I can also play my bass guitar on this thing. Very good amp for many uses, Thanks Sweetwater and Happy New Year!

This amp brought out many colors in my keyboard patches that have been missing! The effects are fabulous, and make a great addition to my keyboard effects. Got the amp on Thursday and it made its debut Sat. night. Great sound and more than enough power.

This amp works very well with my Roland FA 08 Again thanks Sweetwater for the fast service I also love my Roland FA08 witch also came from Sweetwater and I have been very happy with again thanks for the good service

Love it !! And it has a lot features and I got on 6mo payment plan

Does Dynamite come in a small package, YES IT DOES!! This Amp can prove it. From the response to the punch, it's got it. Got chin music for rattling the windows in the house:)!!!!
Control knobs are right on, no delay to request. The EFX's are AWESOME! It is very surprisingly, not to heavy to carry. Don't need an Appliance Cart for this one.
I'm no Professional by all means, but this one does it perfectly for me. Any jam session or small time gig, this amp will perform to your expectations. Great job Behringer and also to Sweetwater Team for carrying this product.
Salesman was able to steer me in the right direction for this purchase, GREAT JOB!!! Would recommend this amp to friends.

Great sound, great price and shipped to your door!

I've been using this for about 2-3years in a church worship situation and I love it!!! it gets the job done without a lot of fuss.

Wanted something that could accommodate an electric keyboard, electric drum set, and a mic. This thing is awesome and serves the purpose of bringing the family together for some great entertainment. Don't forget to pick up the On-Stage amp stand.

Using a Nord Stage2 Compact with is Amp. The sound quality is impressive. At this time I am just playing small venues and there is More than enough power. Very happy with this purchase. A good bang for the buck. BTW: Sweetwater delivered it in a couple of days. Was not expecting such fast delivery. Works for me.

We use Beringer speakers as our mains at church. We got the Ultratone K900FX for our keyboards and it was a lot better than others we tried. Now it complements all our other audio equipment. At the same time we can use it for our other location events as a multimedia amplifier (mic, instrument, laptop audio, etc.)

A powerful and extremely portable unit. Quality construction with easy to use effects. I love the intuitive usefulness of this amp. Wish I would have had one in the past when I was touring but it sounds great in my studio. Sweetwater is my go to for professional equipment.

I play a high-quality keyboard at church. Our sound system didn't do justice for a keyboard, so I brought my Behringer amp from home, not knowing how it would perform in an auditorium that size. I was pleasantly surprised; it offers a rich piano or synth sound with lots more volume to spare! The amplifier is heavy to carry back and forth all the time, so I purchased a second one, which is priced where you can. You may not need a more powerful and more expensive amp. If I had it to do over I would.

Good sounding amp for solo or jamming with a group. I have a Korg M1 and Alesis micron ...lol I know old school... but this amp handled really beefy sounds along with Piano and B3's and handeled it really well...so call me impressed already. Had a chance to test it out at a rehearsal tonight (5 piece 2 guitar bass drum) LOUD...lol...and was very happy with it. I wish it had a horn attenuator...ease to install i guess but? Most of my stage experiences were with 15" EV stage monitors and I needed something smaller and this fit the budget and the sound. Very happy also with sweetwater they shipped it out fri and i got it in canada tuesday. Easy to deal with...quick call from salesman after online purchase... I will order again Thanks

Behringer Ultratone K900FX - 90W 12" Keyboard Amp
What a great buy. I purchased this about 3 years ago for my wife. She plays her Casio wg6600 keyboard into it. Not the greatest but it works for us. 95 % of the time she plays in nursing homes The amp works great. Hook up the keyboard, and also a Sure mic with three inputs and one is an optional line/ XLR for mic. You can"t go wrong.
Vicki my wife also plays at the local Amvets club during their Wednesday night dinner with a friend who plays Base. We use a behringer xenyx 1002B mixer, bought from Sweetwater.
I connected the keyboard, Base, and 2 sure SM58 mics to the mixer. Set all the levels, and overall it all worked great for the size room we are in.
I have a back ground in Radio Frequency and an electronic degree, I"m still new to the audio end of electronics, I"m still learning and asking lots of questions. I guess I"m getting it right people like what they are hearing..
One thing is the knobs and EQ area is recessed, but they have been bumped. I am planning on putting a thin metal cover attached to small hinges. To cover this area.
So I would give it 5 thumbs up !!
FYI: Most of the equipment we use is from Sweetwater. They are the best when it comes to working with the sales, to shipping. Sweet Water all they way.
As we say in my Hobby, Thanks for being there.
mike and Vicki

Wonderful Keyboard Amp for practice or small Venues/clubs... Sounds Great.
Love all the features and works well with my new Cascio PX5s (which I also love and bought from Sweetwater).
No Issues or problems with either, and the Sales-Staff at Sweetwater went out of their way to give me an extra discount on their package deal, which went into force even after my order had shipped! These guys are the BEST!
Couldn't be happier with my purchase!

When I first received the amp and plugged it in I got crackling noise when I started to adjust the EQ I heard this could happen in some reviews, so I contacted Sweetwater and the instantly started the process of sending me another one I got the other one in 2 days now this one sounds amazing everything I expected in this amp and more I want to thanks the guys from Sweetwater for all the support luckily I did not give up on this model because I would of missed out on a great deal!

Bought one of these several years ago. Really liked it, Thought I would try another. Really love it. Great for my guitars too. acoustic and electric. Good and clear, no noise. Can't say anything bad about this product and buying from Sweetwater is an extra plus.

Just received mine. I had one of these before, and it was a workhorse . In small venues or practice it's great. In bigger settings, it was a great monitor. Nice sound, a little weak on Bass, being a 12 inch, but with a sub line out , it'll be fine. Played a Nord Electro through previous amp. This time it'll be a Hammond SK-2 and Casio PX5-S. Mainly for home now, and small gigs with a trio. If you need more, step up to next size amp, would be best..Behringer has great values for the price in their product line..as always quick service by Sweetwater

Crisp sound perfect for playing a keyboard. And awesome fxs

Considering it's affordability, this baby is totally worth it. Decent volume and sound. Three mixable channels. Built in EQ. Onboard effects are... meh, they have proved minimally useful on occasion. My band has been using it to run our keyboards through as well as miking some horns here and there. It's proved very capable for smallish outdoor shows of ~100 or so people and has been great for practice. Useful as a monitor in other situations as well. At the end of the day, it didn't blow me away but it did exceed my expectations and meet my needs. All for a very reasonable price.

This is the first keyboard amp I have purchased and will only be using it at home as I am not a performing musician. Got it cuz the keyboard I have (Roland fp30) doesn't have very loud built in speakers and I wanted something to carry sound better thru the house cuz my husband likes to hear me play. So far I like this amp a lot. It is very quiet as in no buzz at all unless turned up loud and even then it's barely noticeable. It appears to be very sturdy and well built. The bass notes are beautifully rich and deep sounding thru this amp altho the higher notes sound just a little bit thin but I am still figuring out how to adjust the settings so it may not be the amp at all. Overall I like this amp alot and am very pleased with it. I also appreciate the care taken by Sweetwater and my sales engineer Cameryn Wright to get my new gear safely to me. Sweetwater's customer service can't be beat!

The Behringer Ultratone K900FX is a great value for the money. It sounds great, especially with the lower notes on the keyboard. The upper scale may be a little weak but that could be that I don't understand how to bump up the higher tones....yet..

I also have a wireless mic plugged into channel 1 and that sounds great. Most of our gigs are for audiences of around 200 people, and the amp has plenty of strength to cover a medium size auditorium without being overkill. I have no regrets for purchasing the 900 from Sweetwater.

This is a great keyboard speaker, I was quite surprised at how it sounded and the amount of volumn the little speaker gave out. It has a real nice sound quality and I would recommend this speaker to anyone who's looking for a great sounding compact speaker.

sounds good with my keyboard and guitars.good effects,plenty of power