Marantz 2440 Adaptor Quadradrial 4 Amplifier 1970's

MARANTZ Adaptor Quadradrial 4 Amplifier 100% Original

Tested and fully working. Excellent used conditionalways kept indoors there are no lines or scratches on the front perfect working order. See pictures carefully for condition. 

Dimensions: 482 x 127 x 356. mm Weight: 11kg - Year of manufacture: 1975 - 1978

The YouTube video was filmed with another Marantz receiver in quad mode with 4 sets of speakers (2 front, 2 rear). Please review.

Description

The Marantz model 2440 quadradial adaptor amplifier converts any stereo system with tape source monitor feature to a full featured 4-channel system.

The 2440 incorporates Marantz's exclusive vari-matrix circuit which simulates 4-channel sound from normal 2-channel stereo programs, and is capable of reproducing 4-channel sound from any matrix encoded source.

It will also reproduce any discrete 4-channel program as well as regular stereo and monaural programs.

Specifications

Power output: 20W/ch into 8Ω (stereo)

Frequency response: 5Hz to 45kHz

Total harmonic distortion: 0.3%

Damping factor: 45

Input sensitivity: 150mV (line)

Signal to noise ratio: 80dB (line)

Channel separation: 30dB (line)

Output: 1V (Pre out)

Dimensions: 17-1/3 x 5-1/3 x 14-3/8 inches

Weight: 24.2lbs