Bose 1801 Stereo Power Amplifier, 1974, made in USA

Link: hifiengine  | elektrotanya | eevblog restoration

Specifications
Power output: 250 watts per channel into 8Ω (stereo)
Frequency response: 15Hz to 20kHz
Total harmonic distortion: 0.5%
Input sensitivity: 1.5V
Signal to noise ratio: 100dB
Speaker load impedance: 4Ω (minimum)
Dimensions: 7-3/16 x 18 x 18-1/2 inches
Weight: 82lbs

Downloads

service manual
service supplement