Marantz MA-7A
¥ 180,000 (around 1994)
Commentary
This monaural power amplifier of the Music Link series was developed with a focus on the ability to reproduce music rather than on the mechanism.
The output stage employs a high-order strain-resistant power MOS FET in a parallel push-pull configuration, enabling a pure A-class 30W output.
In addition, the power supply section has been strengthened so that low-impedance speakers can be driven with sufficient margin.
Copper plated chassis and gold plated input / output terminals are used.
Model Rating
Type | Monaural power amplifier |
Rated Output (20 Hz to 20 kHz, 0.008%) | 30W (8 Ω) |
Total harmonic distortion factor | 0.008% |
Frequency characteristic | 10 Hz to 100 kHz + 0 -1dB |
Signal-to-noise ratio (A curve) | 115dB |
Input Sensitivity / Impedance | 0.5V/47k Ω |
Power consumption | 105W |
Maximum external dimensions | Width 208x Height 163x Depth 359 mm |
Weight | 10kg |