Reviews Behringer ULTRATONE K900FX 90-Watt 3-Channel PA System / Keyboard Amplifier

Behringer ULTRATONE K900FX 90-Watt 3-Channel PA System / Keyboard AmplifierBuy Behringer ULTRATONE K900FX 90-Watt 3-Channel PA System / Keyboard Amplifier

Behringer ULTRATONE K900FX 90-Watt 3-Channel PA System / Keyboard Amplifier Product Description:



  • Ultra-flexible 90-Watt 3-channel PA System / Keyboard Amplifier
  • Powerful 12' BUGERA woofer and custom-made 1' driver for ultimate sound reproduction
  • Full 3-channel operation with separate Volume and FX Send per channel
  • Main section with FX Return level and Master Volume
  • CD input allows you to play along to your favorite music

Product Description

BEHRINGER ULTRATONE K900FX

Ultra-Flexible 90-Watt 3-Channel PA System / Keyboard Amplifier with FX and FBQ Feedback Detection

  • Ultra-flexible 90-Watt 3-channel PA System / Keyboard Amplifier
  • Powerful 12'' BUGERA woofer and custom-made 1'' driver for ultimate sound reproduction
  • Integrated digital FX processor with 100 awesome presets including reverb, chorus, flanger, delay, pitch shifter and various multi-effects
  • Revolutionary FBQ Feedback Detection System instantly reveals critical frequencies
  • Full 3-channel operation with separate Volume and FX Send per channel
  • Additional XLR mic input on Channel 1 for direct connection of dynamic microphones
  • Dedicated 5-band graphic EQ for awesome sound shaping
  • Line output for direct connection to your mixing console
  • Main section with FX Return level and Master Volume
  • Subwoofer output for ultimate low-end power
  • CD input allows you to play along to your favorite music
  • Separate headphone output - perfect for quiet practicing
  • Integrated 35-mm pole socket for stand mounting and use as PA System
  • High-quality components and exceptionally rugged construction ensure long life
  • Conceived and designed by BEHRINGER Germany

The ULTRATONE K900FX specializes in clean, powerful sound. With this 90-Watt workhorse in your rig, your keyboards will sound their best gig after gig.

Channel Your Sound

The K900FX gives you three channels, each with separate volume and FX SEND controls, plus Channel 1 has an additional XLR mic input for direct connection of a dynamic microphone. So, if you're the kind of keyboardist with multiple instruments at your disposal, the K900FX is ready to handle up to three independent signals. It is also ideal for use as an all-in-one solution for keys and vocal applications. The onboard 24-bit digital FX processor, with 100 amazing presets, adds a high-tech dash of reverb, chorus, flange, delay, pitch shift and other effects to your sound.

The MAIN Section gives you separate controls for FX RETURN, MASTER VOLUME, PHONES and SHAPE. A CD INPUT allows you to play recorded music through the K900FX during performance breaks, or just for playing along. A separate headphone output is perfect for quiet practicing. The K900FX also features an integrated 35-mm pole socket for stand mounting and use as a PA system.

Big, Beautiful BUGERA

A 12" BUGERA woofer, made completely in-house by our own skilled artisans, works in connection with a custom-made 1.0" driver for awesome, full-range sound. The K900FX also features a subwoofer output, as well as a line output for direct connection to your mixing console.

Be EQ'd and Feedback-Free

Use the K900FX to bring out the best in your sound via its 5-band graphic EQ with our proprietary FBQ Feedback Protection System. This incredible audio solution immediately pinpoints frequencies that cause feedback, so you get perfect sound every time.

ULTRATONE is the Key

Versatility, incredible sound and durability merge beautifully in the K900FX. Check it at your nearest BEHRINGER dealer to find out what it can do for your sound.

Customer Reviews

Most helpful customer reviews

8 of 9 people found the following review helpful.
5Great amp!
By Jose Martinez
Being an active keyboard player, I previously owned a powerful 150W Peavey KB300 -which sounded BIG...but also weighted BIG- and a trusty little Peavey KB/A15 -a nice not so powerful 15W two channel amp-. I sold the KB300 some years ago and kept the KB/A15 because it was more comfortable when taking it to a gig.When I read about the Behringer K900FX I thought it was to good to be true: 3 independent channels, 5 band EQ, 90W, 40 pounds, 100 digital effects, line out, XLR mic in, cd in, subwoofer out and a NICE PRICE. Woooowwww!!!! I decided it was time for a change!I bought it about one month ago and I still didn't take it to a gig, but it sounds great! If this amp keeps working like this in the future, I think I won't be tempted to change for a loooooooong time. It has no noticeable hiss, very good bass response and clear highs. If the 12 inch woofer isn't enough, you can feed an active subwoofer through the subwoofer out. You won't find many keyboard amps with this extra. The digital effect presets are quite usable and I find no degrading of the signal. Another important issue I was aware of was weight. After my bone marrow transplant three years ago, I decided I didn't want to carry an 80 pound mastodon anymore. With about 40 pounds (18.8k), the K900FX's weight is OK for me.I'll use the K900FX just alone -in small to medium places- or sending my keyboard rig through my Behringer Xenix 1202FX mixer in bigger gigs: the mixer's main out to the house's sound system and the control room out to the K900FX. This way, I can use the amp as a quality monitor WITHOUT LOSING CONTROL OF MY VOLUME and let the guy in the main mixer do his stuff without bothering me.I can't wait to give my new K900FX its baptism of fire!!!!!!!

2 of 2 people found the following review helpful.
3Not a first choice for keyboards
By Enlightener
I had very little of an idea about what to expect when I ordered this amp since I had never tried the Behringer brand before. I was in the market for an amp that could be used in a small to medium sized restaurant setting/venue with my Yamaha CP33 stage piano. Unfortunately, even with Amazon's large discount at the time, I was disappointed with this Behringer product within the first few minutes of trying it out. My primary reason is the sound quality which I expected would do a much better job of creating a piano's dynamic range.The sound it produced was far from vibrant and full; I would describe it plainly as dull and closed in. Not downright horrible, but just mediocre for piano performance where I wanted the closest sound replication of the real thing as possible. This was true at all volumes for not just piano but organ, strings, marimba and also electric bass sounds. A couple other notes; I did not try using a mic and speaking through it since for my gigs I have no reason to. Also, if you are looking for an amp that is easy to carry, this one would probably be more weight than you'd be looking for.I gave it a few days in my living room to see whether it would grow on me. But my opinion stayed the same. As an amazon prime member, I was able to ship the amp back for free so I wasn't left with any bad taste in my mouth. I was actually glad I gave this reasonably-priced amp a try. Quality and long-term reliability are certainly other considerations, but it's had to break the bank up-front with Behringer. Then again, I have resolved to expand my research to active PA speakers and brands like Yamaha or JBL. More money, but likely much more value!

2 of 2 people found the following review helpful.
5Great value
By Private
Bought it for use with my keyboard, very convenient the multiple inputs including the mic plug. The effects work very well, the sound is clean, no hums or hisses, perfect. I have not tested it yet in a real gig with loud volume. Highly recommended.

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Buy Behringer ULTRATONE K900FX 90-Watt 3-Channel PA System / Keyboard Amplifier