Updated: We've obtained a bit more information about the DPSM via an internal MINI document you can download here.
MINI UK Press:
The Digital Power Sound Module (DPSM) is the latest and loudest addition to MINI's range of in-car entertainment accessories.
Approximately three times more powerful than the average home stereo, the DPSM has a full range digital amplifier that kicks out an awesome 660 watts of power.
With a whisper measuring around 30 decibels, normal conversation approximately 60 decibels and screams from a concert crowd reaching 126 decibels, the DPSM's ability to produce 128 decibels of sound through its six high performance speakers make it the ultimate in-car accessory for music-mad MINI owners, who like their tunes played loud and clear.
The Digital Power Sound Module is a retro-fit accessory and is priced at £995 including fitting. It can only be fitted in conjunction with Radio BOOST. and is available from any official MINI dealership.
The Digital Power Sound Module is on sale in the UK from 20 October and is available from any official MINI dealership.
As is typical with these things there's no word on US availability at this point.