The SI-1650 is 16-channel amplifier configurable to deliver a solid 50 watts per channel RMS into 8 ohms or 100 watts per channel RMS into 4 ohms using a special high power mode. A new digital power transformer design provides the energy necessary to efficiently deliver solid, deep, controlled bass response to a house full of speakers. Each of the SI-1650’s eight adjacent speaker output pairs are configurable into a single high power output. The SI-1650’s BusMatrix™ incorporates advanced PCB construction ensuring extremely high channel to channel isolation. Signal to noise ratios and cross-talk are equivalent to a professional mixing board found in a recording studio. The audio circuitry of the SI-1650 is constructed with the finest parts available, including metal film resistors, high quality capacitors and oversized heat sinks. All this attention to technical detail results in a sound that is clear and uncolored.A web based IP Configuration utility provides control of the BusMatrix™ selector giving you the flexibility to assign each speaker channel to any of the sixteen signal inputs. Adjacent signal input pairs can also be combined and assigned to a speaker channel for mono sound applications. With BusMatrix™, routing surround sound to the master bedroom, stereo to the den, mono to the powder room or high power to a subwoofer has never been easier. BusMatrix™ makes the SI-1650 an ideal multi-room or multi-zone amplifier and offers exciting new features and system design possibilities to the professional installer.