Vintage Pioneer 8100 integrated amplifier c. 1974

We have owned this 40-watts-per-channel (8 ohm) amplifier for 19 years. In 2018, it was serviced, then a few months later, it was put into storage following a move. As can be concluded from the photographs, the unit is in very good condition for a 51-year-old piece of equipment. The face has a few light scratches, one major nick near "Treble" and two other smaller ones near the power switch. The veneer has one scratch on the right side panel and some damage along the top left corner of the cabinet. Controls: Speakers (A, B, A + B), Bass (50 Hz and 100 Hz), Treble (10 kHz and 20 kHz), Volume (-30 dB, -15 dB and 0), Loudness, Function (Mic, Phono 2, Phono 1, Tuner, Aux 1 Aux 2), Protection, Phones, Low filter (Off, subsonic, 30 Hz), Tone defeat, High filter (9kHz), Muting (-20 dB) Balance, Tape monitor, Mode (Stereo Rev and Norm, Mono L+R, L, R) It operates as it should; a demonstration will be provided, upon request. It sounds as well as it shows. Located in High River. Asking $550 OBO. Please read the following info below, from hifiengine. "Description The SA-8100 is Pioneer's big power integrated stereo amplifier. It features a unique twin tone control system for versatile tonal adjustment, high and low subsonic filters and high stability, reliable pure complementary OCL power amplifier design, with differential amplifier at the first stage. Large electrolytic capacitors ensure stable operation. Specifications Power output: 40 watts per channel into 8Ω (stereo) Frequency response: 10Hz to 70kHz Total harmonic distortion: 0.05% Damping factor: 60 Input sensitivity: 2mV (mic), 2.5mV (MM), 150mV (line) Signal to noise ratio: 70dB (mic), 80dB (MM), 90dB (line) Output: 150mV (line), 30mV (DIN), 2V (Pre out) Speaker load impedance: 4Ω to 16Ω Semiconductors: 49 x transistors, 25 x diodes Dimensions: 430 x 138 x 341mm (17 in. x 5.4 in. 13.5 in.) Weight: 12.1kg Year: 1974"