Behringer K450FX Ultratone Keyboard Amp

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  • Integrated Digital FX Processor with 100 Presets
  • 10'' Bugera Speaker and 45 Watt Output
  • Dedicated 5-Band Graphic EQ
  • Revolutionary FBQ Feedback Detection
  • Independent Volume and FX Send Controls

Behringer K450FX Ultratone Keyboard Amp


The Behringer K450FX Ultratone Keyboard Amp is a compact and portable 45-watt amplifier that features a 10'' Bugera speaker and revolutionary FBQ Feedback Detection technology. Equipped with three independent stereo channels, each with independent Volume and FX Send controls, the K450FX is the perfect all-in-one solution for both keyboard and vocal performances. Delivering extremely accurate sound reproduction and powerful low-end responses, the K450FX Ultratone Amp is suitable for use on stage and in the studio.

Product Ref: 6334

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  • Incredible flexible 45-watt 3-channel PA speaker / keyboard amplifier
  • Powerful 10'' Bugera speaker for accurate sound reproduction
  • Integrated digital FX processor with 100 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 provides flexible sound shaping
  • Line output for direct connection to your mixing console
  • Main section with FX return level and master volume
  • Subwoofer output for additional low-end power
  • CD input allows you to play along to your favourite music
  • Seperate headphone output for quiet practicing
  • Integrated 35mm pole socket for stand mounting and use as a PA system
  • Designed by Behringer Germany


  • Line Input: 1/4'' TS Connector
    • Impedance: Approx. 30kΩ Balanced
  • Stereo Link Input: 1/4'' TS Connector
    • Impedance: Approx. 20kΩ Unbalanced
  • CD Input/Aux Input: RCA Connector
    • Impedance: Approx. 20kΩ Unbalanced
  • Microphone Input: XLR Connector
    • Impedance: Approx. 2kΩ Balanced
  • Headphone Output: 1/4'' TRS Connector
  • Line Output: 1/4'' TS and XLR Connector
  • Line Output Impedance:
    • 1/4'' TS: Approx. 150Ω Unbalanced
    • XLR: Approx. 300Ω Balanced
  • Stereo Link Output: 1/4'' TS Connector
    • Impedance: Approx. 150Ω Unbalanced
  • Sub Output: 1/4'' TS Connector
    • Impedance: Approx. 150Ω Unbalanced
  • Equalizer: Graphic EQ with FBQ Feedback Detection
  • EQ Frequency Range: 63Hz/250Hz/1kHz/3.5kHz/12kHz
  • EQ Control Range: +12dB to -12dB
  • Digital Effects Sampling Rate: 40kHz
  • Digital Effects Converters: 24-Bit Sigma-Delta, 64/128-Times Oversampling
  • Power Amp Output: 45 Watts
  • Speaker: 10'' Bugera™
  • Input Impedance: 4Ω
  • Power Consumption: Approx. 75 Watts
  • Dimensions: 419mm x 441mm x 299mm
  • Weight: 14.6kg