32x64 Pre-Amp Audio DSP Matrix, 32x Stereo + (32x Coax/16x Opitical) Digital Inputs, 64x Stereo/Digital Coax Outputs, 18x 12v Triggers, 2x Doorbell/Pager, 5 Band EQ, Adjustable Gain, Zonal Sub Woofers, Lip Sync Delay, Stereo to Mono Downmix, RS232/IP Control