Niles SI-1230 Series 2 12-channel Multi-room Power Amplifier ully configurable 12-Channel amplifier Adjacent channels are bridgable to 80 watts RMS into 8 Ohms (all channels driven) Unique BusMatrix selector allows each channel to select from four options: left bus, right bus, left plus right bus (summed stereo), or INPUT level controls. Status display for troubleshooting Audio circuitry constructed with the finest parts available, including 1% metal film resistors, high quality capacitors and oversized heat sinks for clear and uncolored sound