Marantz Model 250M (1975 - 1978)
A professional-grade stereo power amplifier built for reliability and precision, featuring distinctive cobalt blue VU meters.
Overview
The Marantz Model 250M is a stereo power amplifier designed for professional use, manufactured from 1975 to 1978. It delivers high power output with low distortion across a wide frequency range, making it suitable for demanding audio applications. A defining visual feature is its cobalt blue VU meter with a 3-step range switching function, offering clear monitoring of signal levels.
Specifications
| Rated Output (20 Hz to 20 kHz, Both Channel Drive) | 125W + 125W (8 Ω) |
| Rated Output (4 Ω) | 150W + 150W (20 Hz to 20 kHz, Both Channel Drive) |
| Total harmonic distortion | 0.1% or less (20 Hz to 20 kHz) |
| Intermodulation distortion | 0.1% or less (20 Hz to 20 kHz) |
| Frequency response | 20 Hz to 20 kHz ± 0.1 dB |
| Power bandwidth | 5 Hz to 45 kHz |
| Input Sensitivity / Impedance | 1.5V / 100k Ω |
| Damping factor | 100 or more (8 Ω) |
| Power requirements | 100 VAC, 50Hz/60Hz |
| Power consumption | 500W |
| Dimensions (W x H x D) | 390 x 146 x 264 mm |
| Weight | 12.7kg |
| Original price | ¥ 250,000 (around 1976) |
Design
The amplifier features a cobalt blue VU meter with a 3-step range switching function, providing precise visual feedback during operation.
Product Family
Optional accessories include the mahogany wood cabinet (WC-2N), priced at ¥12,000, and the rack mount adapter (RA-2), priced at ¥5,900, both sold separately.
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