Features: The BB835 8-Channel Amplifier from SpeakerCraft provides outstanding sound quality, performance and long term reliability. Each channel is individually protected. If the circuitry determines that a channel must be shut down for protection, a rare occurrence, only the channel affected will be turned off. The other channels will continue to play. Once conditions return to normal, the affected channel will be turned back on and operate as normal. Multiple Power Modes and Output Trigger: There are three ways to turn the amplifier on: constant, trigger and audio sense. This allows the amplifier to operate seamlessly as part of a sophisticated custom installation. A separate output trigger allows the amplifier to activate other components via a voltage signal. Individual Channel Level Adjustments: Each channel has its own level adjustment. This allows the loudness of each speaker to be perfectly matched to its area Bridging: The power output of adjacent channels can be combined to provide extra power when needed in certain areas. This is easily accomplished by flipping a single switch Flexible Input Selection: Each of the 12 channels can be assigned a variety of source inputs. A dedicated input can be assigned to each channel. Each channel can also be configured to play common signals from the bus or auxiliary inputs. This provides the flexibility needed in sophisticated custom audio installations. Audiophile Design: Sophisticated design and superior internal components result in outstanding sound quality, performance and long term reliability Specifications Number of Channels: 8 Power Rating: 35W per channel RMS at 8 ohms (all channels driven)/ 70W per bridged Zone. Input Sensitivity: 900mV for 8 ohm rated output Input Impedance: 15K ohms Total Harmonic Distortion (THD): .04% 20Hz to 20kHz @ 8 ohms (all channels driven) Dimensions (HxWxD): 7" x 17" x 17.4" Weight: 43 lb. (19.5kg) Offers welcome/cash only