The Bowers & Wilkins SA250 MK2 Subwoofer Amplifier is purpose-built to power your Bowers & Wilkins ISW subwoofers. This powerful & stable Class D Amplifier encourages the production of impactful bass for your home cinema or premium hi-fi setups using ICEpower technology. For an expansion that suits you with the SA250 you can simultaneously drive two of the same subwoofers for increased stability & low-end definition. The 2U rack size fits into any equipment rack for simple integration into storage compartments.