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Bowers & Wilkins CI Series SA250 Mk2 Black Subwoofer Amplifier - SA250MK2

Abt Model: SA250MK2 | UPC: 714346314225
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Product Details

Bowers & Wilkins CI Series SA250 Mk2 Black Subwoofer Amplifier, Model  SA250MK2

The SA250 Mk2 subwoofer amplifier is specifically designed for use with the Custom Installation Series In-wall subwoofers, the ISW-3 and ISW-4. Deceptively slim at 3.5inches, and weighing 11.9lb, it provides 250 Watts of power.

The SA250 Mk2's equalisation is custom tailored to the In-wall subwoofers, with a two position EQ switch to select between the ISW-3 and ISW-4.


  • Description 250W rack-mount amplifier with built-in subwoofer equalisation
  • Front Panel
    • Rotary volume (line in)
    • Rotary low-pass filter frequency (4th-order Linkwitz, 40Hz - 140Hz)
    • Low-pass filter defeat 2-posn switch 
    • Phase 0º/180º 2-position switch
    • Bass extension 3-position switch
    • Movie/music EQ 2-position switch
    • On/auto/s
  • Rear Panel Model select 2-position switch (ISW-3/ISW-4)
  • Amplifier Inputs
    • 2x RCA Phono socket, line in
    • 2x RCA Phono socket, link out
    • 1x XLR socket, line in
    • 1x XLR socket, link out 
    • 3.5mm jack - 12V trigger on/standby (overrides manual standby setting)
    • 3.5mm jack - 12V trigger equalisation movie/music
  • Amplifier Outputs
    • 1x Neutrik® Speakon® 4-pole speaker socket
    • 2x pairs of Binding Posts
  • Amplifier Power Output 250W
  • Input Impedance 33kΩ
  • Signal / Noise >80dB
  • Rated Power Consumption
    • 95W – 1/8 full power
    • 30W – Idling
    • <1W - Standby
  • Finish Black

Approximate Dimensions

  • Height: 3.9"
  • Width: 16.9"
  • Depth: 12.7"

Approximate Weight

  • Unit: 11.9 lbs
  • Shipping: 17lbs
California customers: Proposition 65 WARNING

Key Features

Rack-Mount Amplifier With Built-In Subwoofer Equalisation/ 33kOhm Input Impedance/ 250W Amplifier Power Output/ Neutrik Speakon 4-Pole Speaker Socket/ Black Finish

More reasons to buy the Bowers & Wilkins CI Series SA250 Mk2 Black Subwoofer Amplifier SA250MK2 from Abt Electronics

  • is an authorized dealer.
  • The Bowers & Wilkins CI Series SA250 Mk2 Black Subwoofer Amplifier SA250MK2 is Brand New.
  • Abt ships this product for free!


TypeSubwoofer Amplifier


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