The Audio Innovations 1000 MK 3 amplifiers and Pre-Amp are from the early 90s. Within the last year I had them updated at Glenn Poor's shop in Normal, Illinois. All tubes are in fine order and they perform as they should. This is one of the primo British manufacturers in their time of high end gear. I have them set up with with a pair of Harbeth HL compact 7ES-3 XD speakers, which I also have for sale along with a REL Acoustics Classic 99 Subwoofer. The two mono amps and the Pre-Amp are for three thousand, the speakers and subwoofer will each be priced individually. I am not looking to trade but a money deal only. I have reached a point where it is time to let go of some gear because I simply have too much. The gear is in excellent condition for being over 30 years old and each of the mono-amps plays at 50 watts.