I bought this to biamp my mains but found the 2.1 was more than enough. So it has never been used I have it since it was new. This and the 2.1 are Mark Levinson Designs and there version of it sold for 4k. The amp is a beast. And very rare.

Had since new, just moving to 11.2 setup.

Used but in complete working order. Original purchaser from Circuit City back in 1999. Pre-HDMI AV Pre-Amp Processor (Signature Series 2.0). The 5-Channel Amplifier provides 100-watts per channel @ 8 ohms or 150-Watts per channel @ 4 ohms per specifications (see photo). Amplifier comes with original box. The blue lighting behind the Signature badge on the amplifier only lights up in the middle (see photo), this does not effect the performance of the amplifier. Also included in the sale are four (4) Monster Cable M550i RCA interconnects. Everything included in the auction is as follows: Signature Series 2.0 Pre-Amp Signature Series 2.1 5-Channel Amplifier 4- Monster Cable M550i Interconnects Original Remote Original FM Antenna for unit No Returns will be accepted. Great unit for those vintage setups, or for someone looking for a great 5-channel amplifier to use in there setup. Package deal only, will not separate.

HARMAN/KARDON signature 2.1 5 channel amp upgraded The GOOD about this amp. I have spent a lot of money on this amp upgrading the internal parts. All the caps have been replaced and up sized/ the main rail caps have been upgraded from 12,000 uf to 18,000 uf. The main power wire was removed and upgraded with a 12awg plug with a ground. This amp has always been cooled with forced air cooler. Amazing output and sound quality. The specs Im listing are stock this amp will do 10-15% more easy. 100 watts per channel x 5High current, ultrawide-bandwidth designLow negative feedback and low harmonic distortionAuto turn-on triggered from HK Signature 2.0 preamplifier/surround processorFanless cooling designFor those seeking home theater performance a cut above the ordinary, the team of Harman Kardons Signature Series 2.1 multichannel amplifier offers superior sound, sophisticated ergonomics, and outstanding build quality.Manufacturers often slant their power specifications to make a given product appear more powerful than it is. Harman Kardon, however, doesnt need to fudge its specs for this dynamic, well-behaved, and (for its quality) reasonably priced five-channel amplifier. Some amplifiers actually decrease their power output when driving lower-impedance speakers; the Signature Series 2.1 gives you an honest 100 watts per channel (wpc) into 8-ohm speakers and 150 watts with 4-ohm models across the full audible bandwidth, with less than 0.03 percent total harmonic distortion when all channels are driven. The BAD News about this amp. Channels 2 & 4 have stopped working. This is a 3 channel amp right now. I have unplugged the power leads to those bad channels to stop any more damage from happening. Could be something small i have not had it checked out. I only needed it for 3 channels for lcr duty. Thats all the bad news there is. This is amazing amp and anyone would be lucky to own this amp. I will be starting the bids low. Good luck.. This item is sold as is and no returns I have listed whats wrong this item so there is no shock when u get it.