Sherbourn Technologies is a known name in the home theater and custom installer market,and is a revered force in high performance, high value audio/video components for the custom integration market. The Sherbourn PA 18-45 18 Channel distributed audio amplifier combines the latest cutting edge technology with solid engineering and high quality components to deliver superior sound quality, performance, and features. Some of the more important features include:18 channels of fully discrete, audiophile quality sound.Each channel delivers: 45 watts into 8 ohms. 70 watts into 4 ohms 140 watts into 8 ohms (9 channels / bridged mode).Two stereo input buses and individual channel insert points. Always-on, auto sense, and triggered power modes. Convection cooled, with fan assist.Massive toroidal power supply.Full sized five way binding posts.Front panel zone status indicators.Intelligent protection from electrical faults.Intelligent protection from thermal faults and over heating.Independent zone fault protection allows other zones to continue operating after one or more zones have entered protect mode and shut down.Performance specificationsAnalog inputs:2 bus inputs (bus 1, Bus2); each bus has one stereo pair of unbalanced (RCA) inputs.18 individual channel inputs; each channel has one unbalanced (RCA) input.Analog outputs2 bus outputs (bus 1, bus2); each bus has one stereo pair of unbalanced (RCA) outputs which provide a buffered copy of the input signal.Input sensitivity (For full output) 370 mV (8 ohm load)Speaker outputs 18 pairs of 5 way binding posts, one pair per channel.(In bridge mode, speakers are connected to the red binding posts of both channels in the zone).Minimum recommended load impedanceIndividual channels; 4 ohms (which equals one 4 ophm lod or two paralleled 8 ohm loads).Bridged channels; 8 ohmsPower output (per channel)45 watts RMS per channel (x18); into 8 ohms; two channels driven.70 watts RMS per channel (x18); into 4 ohms; two channels driven40 watts RMS per channel (x180; into 8 ohms; six channels driven.140 watts RMS per channel (x9); into 8 ohms (bridged).S/N ratio:> 100dB (A-weighted)Frequency response:20 Hz to 20kHz + / - 0.1 dB at 1 watt (-3 dB at 80 kHz). This unit has been thoroughly cleaned, and each channel was tested. The sound is clean and distortion free. It includes a user manual and a brand new cord that was not shown in the pictures. If you have any questions, please ask before bidding. This unit is VERY heavy (41 pounds) and will be double boxed for shipping. If you wish, you may also pick it up. Just let me know before you pay so that I can remove the shipping charge.LOW STARTING PRICE! Please check out my other items for auction.