Vintage Audio Online

Mcintosh Mac 1900 Stereo Receiver (1973-1978. Last retail price $949.00)

One of Mcintosh's finest solid state receivers.  The Mac 1900 produces 55 watts per channel into 4 or 8 ohms with a damping factor of 50.

Tech:
Solid State.

55w/ch into 4 or 8 ohms. Response 20-20kHz (+0.5 -0.5dB). Distortion .2%. Noise and hum pwr amp -95dB, aux -90dB, phono -76dB. Damping factor 50. Input impedance: pwr amp 100k, aux 250k, phono 47k. Input sensitivity: pwr amp 2.5V, aux 0.25V, phono 2.0mV. Tone controls: bass and treble. +16 to -16dB. LF filter 50Hz at 12dB/octave. HF filter 7kHz at 12dB/octave.

[...]

Bang and Olufsen Beomaster 1900 (1976-1979) FM stereo/MW/LW receiver, 2x30W

The Bang and Olufsen Beomaster 1900 is a very famous B&O product, and one of the most successful in terms of sales. When launched, its radical appearance marked a true departure in receiver design, and its descendants remained part of the Beomaster range for over 20 years.

[...]