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Behringer Ultratone K900FX Keyboard Amplifier

The Behringer K900FX Ultratone offers a perfect balance of power and value in a sturdy, gig-ready package—at an unbelievable price!
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Product Description

The Behringer K900FX Ultratone Keyboard Amplifier is an ultra-flexible, 90-Watt, 3-channel Keyboard Amplifier and PA System with FX and FBQ Feedback Detection.
With 90 Watts of power, you’ll never run out of horse power. This 3-channel PA/keyboard amplifier enclosed in a bass reflex cabinet has a special, beefed up 12-inch BUGERA woofer and a custom-made 1-inch tweeter, delivering clear, clean sound that’s ideal for larger gigs.

Behringer has included an internal 24-bit digital FX processor with 100 awesome presets including reverb, chorus, flanger, delay, pitch shifter and various multi-effects. Their revolutionary FBQ Feedback Detection System immediately indicates any feedback frequency and lets you combat feedback at your finger tips.

Enjoy full 3-channel operation with separate volume and FX Send controls, plus there is an additional XLR mic input on channel 1 for direct connection of dynamic microphones. Use the dedicated 5-band graphic EQ to give your sound your very own edge.

All in all, the ULTRATONE K900FX offers a perfect balance of power and value in a sturdy, gig-ready package—at an unbelievable price!

Behringer K900FX Ultratone Features

  • Ultra-flexible 90-Watt 3-channel PA System / Keyboard Amplifier
  • Powerful 12-inch BUGERA woofer and custom-made 1-inch driver for ultimate sound reproduction
  • Integrated 24-bit 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

Product Specifications

Behringer K900FX Specifications

Audio Inputs

  • Line In 1-4: 1/4 inch TS connector
  • Stereo Link In: 1/4 inch TS connector
  • CD In/Aux In: RCA connector
  • Mic In 1: XLR connector
Audio Outputs
  • Headphones connector: 1/4 inch TRS connector
  • Line Out: 1/4 inch TS and XLR connector
  • Stereo Link Out: 1/4 inch TS connector
  • Sub Out: 1/4 inch TS connector
  • Type: Graphic EQ with FBQ Feedback Detection
  • Frequency Range: 63 Hz/ 250 Hz/ 1 kHz/ 3.5 kHz/ 12 kHz
  • Bandwidth: 2/3 octave
  • Control Range: +12/-12 dB
Digital Effects Processor:
  • Converters: 24-bit sigma-delta, 64/128-times oversampling
  • Sampling Rate: 40 kHz
System Specifications:
  • Power Amp Output: 90 Watts
  • Type:12 inch BUGERA woofer and custom-made 1 inch driver
  • Input Impedance: 4 ohms
Power Supply:
  • Mains Voltage: USA/Canada 120 V, 60 Hz
  • Power Consumption: approx. 150 watts
  • Fuse: 100-120V: 3.5 A H 250 V
  • Mains Connection: Standard IEC receptacle
Dimensions and Weight
  • Dimensions: 16 7/8 x 19 3/8 x 11 3/4 inches
  • Weight: 41.45 lbs

Helpful Info about the Manufacturer
Phone:  702-800-8290 Warranty:  1 Year (3 year when you register online at Behringer)
Jeff Swift
A Fantastic Jazz Guitar Amp.
What is your overall opinion of this product?
Maximum satisfaction.
What is your opinion of the quality of this product? How does it work for different genres of music?
The clean sound with a touch of built in reverb is the best I'v ever heard.It makes me want to play Jazz chords and want to practice more than ever.Iv not explored the built in effects beyond light reverb but am totally floored by the classic Jazz sound I get when I adjust the guitar for it.I jam with solo keyboard grooves and CDs and love the sound.The 90 watt stays cool,other models may vary on that trait?I run the volume at 50% for large bedroom practice and I have excellent hearing.
Are the features on the product what you were expecting? What are your favorite features?
You need to get a RCA adapter for your MP3 or CD player,you don't want to use a line in for that,it won't sound like it should if you do depending on how it was mixed in studio.
How is the sound quality? How does the sound compare to other products you've use?
For Keyboard it is infinitely better than a guitar amp.For CLEAN rich guitar tone it may be even better on clean than my Fender Blues Deluxe,which is another great amp by the way.I hear no distortion testing this on a 61 key range keyboard and its far far better than built in keyboard speakers and as good and more comfortable than using decent full size headphones.
Are the controls logically laid out?
I mildly wish the controls where on the front since I have it well off the floor and behind me but I have my perfect sound for guitar keyboard jams dialed in anyway.
Did you get what you were expecting for the price? How does it compare to similar products in the same price range?
Its my only keyboard amp ever and its turned out to be also the best clean amp for guitar Iv ever owned.Its dirt cheap in price and if I had a Jazz or Rockabilly student I would say get this particular model.
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MSRP: $374.99