Here's an Great American Sound-Son of Ampzilla Amplifier. In great shape and just had $500 work done. A very sweet amp! Here's the write-up and specs: The Great American Sound (GAS) Ampzilla is a GAS Son Of Ampzilla Stereo Power Amplifier (1977-1978) Specifications Power output: 80 watts per channel into 8Ω (stereo) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.08% Input sensitivity: 1V Signal to noise ratio: 100dB Speaker load impedance: 4Ω to 16Ω Dimensions: 16.25 x 5.25 x 11 inches Weight: 25lbs Year: 1977 $750 OBO McIntosh, Phase Linear, Hafler, Marantz, Dynaco, NAD, Rotel, Sansui, A&R Cambridge (Arcam),