New in October 1993. Original owner. Original box, manual, reciept, etc. Used only 2 years then stored in original box until now. A few small scratches on top. TFM-45 and TFM-42 are same amplifier except for the front panel power metering. They can deliver more than 375 watts RMS into an 8 ohm loudspeaker, 20-20kHz, with less than 0.5% THD. Closed-loop frequency extends from below 10 Hz to beyond 100,000Hz. Can be set up as mono or stereo. Can be heard locally.