AudioControl Avalon G4 Amplifier: 

The AudioControl Avalon G4 may be the Swiss army knife of high-performance amplifiers. The Avalon G4 can be set up for use in whole-house audio systems; as an outboard amplifier for subwoofers, and as a stereo or multichannel home theater amp. The Avalon produces gobs of power and high levels of detail, all for under $2K.