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Bowers & Wilkins Subwoofer Amplifier
Bowers & Wilkins Subwoofer Amplifier 0

Bowers & Wilkins Subwoofer Amplifier

Model #: SA250-Mk2
Bowers & Wilkins
At a Glance
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Get to know this product.

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 equalization is custom tailored to the In-wall subwoofers, with a two position EQ switch to select between the ISW-3 and ISW-4.

Additional Features:

  • Rotary volume (line in)
  • Rotary low-pass filter frequency (4th-order Linkwitz, 40Hz - 140Hz)
  • Low-pass filter defeat 2-posn switch
  • Phase 0/180 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 equalization movie/music
  • Amplifier outputs 1x Neutrik® Speakon® 4-pole speaker socket
  • 2x pairs of Binding Posts
  • Amplifier power output 250W
  • Input impedance 33kO
  • Signal / noise >80dB
  • Rated power consumption 95W – 1/8 full power
  • 30W – Idling
  • <1W - Standby
  • Height 100mm (3.9 in) [88.5mm (3.5 in) plus feet]
  • Width 430mm (16.9 in)
  • Depth 322mm (12.7 in)
  • Front panel height 2U 88.1mm (3.5 in)
  • Net weight 5.4kg (11.9 lb)
  • Finish Black


Analog Audio(RCA) Output:2


Power On Consumption (watts):95
Power Off Consumption (watts):1
Signal to Noise Ratio:80dB

Misc. Specs

Depth (in.)12.7
Height (in.)3.9
Width (in.)16.9
Analog Audio(RCA) Input2
Product Weight (lbs.)11.9
WarningProposition 65 Warning for California Residents