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AmplifiersIntegrated AmplifiersDiscontinued
Estimated price (community-sourced)
$1,250
Around — community and catalog average, updates slowly
About the MA-5100
The MA5100 is a two-channel, solid-state integrated amplifier manufactured from 1966 to 1972. It combines preamplifier and power-amplifier sections and provides 45 watts per channel into 4- or 8-ohm loads, with inputs for auxiliary, tape, tuner, two phono sources, and tape head. Its controls include dual-concentric bass and treble adjustments, selectable phono equalization, filters, loudness compensation, and multiple stereo and mono modes.
Specifications
Type: 2-channel solid-state integrated amplifier
Power output: 45 W per channel into 4 or 8 ohms; 30 W per channel into 16 ohms
Frequency response: 10 Hz–20 kHz (+0, −0.5 dB) at rated power
Total harmonic distortion: 0.25% maximum at rated output
Speaker output impedance: 4, 8, or 16 ohms
Damping factor: 50 (4 ohms), 100 (8 ohms), 200 (16 ohms)
Inputs: Auxiliary, tape, tuner, phono 1, phono 2, tape head; tape monitor
Input impedance: 250 kΩ (line), 47 kΩ (phono), 500 kΩ (tape head)
Input sensitivity: 0.3 V (high level), 2 mV (phono and tape head)
Dimensions: 16 in W × 5 7/16 in H × 14 1/2 in D
Weight: 25 lb net
Power requirements: 120 V AC; up to 200 W at rated output