Terratec SoundSystem Aureon 7.1 FireWire MAC/PC. Audio quality: 24 bit, Audio output channels: 7.1. Host interface: FireWire. Minimum RAM: 256 MB, Minimum processor: Intel / PowerPC (G4), Minimum hard disk space: 10 MB. Package dimensions (WxDxH): 220 x 350 x 150 mm, Package weight: 1750 g