Denon PMA-910V (c. 1986)
The PMA-910V is a compact integrated amplifier from Denon's mid-1980s lineup, priced at ¥33,000. It was aimed at "high quality and casual" listening that could move between audio and video sources. It was simple and no-frills: 35W + 35W into 8Ω (rated, 20 Hz-20 kHz), with dynamic power stretching to 70W into 4Ω. The front panel carried a headphone jack rated up to 100 mW into 8Ω, and the speaker terminals accepted 6-16Ω loads with A/B switching.
Denon's engineering notes for this model emphasize a clean, straightforward circuit path: an IC drive stage with good S/N and distortion figures, a final stage using 20 MHz power transistors, and a motherboard-style chassis layout meant to keep wiring short and parts placement logical. The tone control is a continuously variable loudness circuit that boosts +6 dB at 100 Hz and +6 dB at 10 kHz at maximum — Denon claimed this approach avoided the distortion typical of conventional tone stacks. Distortion was rated at a very respectable 0.003% (1 kHz, 17.5W, 8Ω), with a frequency response of 5 Hz–150 kHz (+0/−3 dB). Phono MM input is present (2.5 mV/47kΩ, RIAA ±0.5 dB), alongside CD, tuner, tape, and two video inputs.
Documentation on this model is thin beyond its Japanese-market spec sheet. Production years aren't confirmed - the source database dates the ¥33,000 price "around 1986." A Russian forum poster, working from the front panel labeling and scarce online info, first mistook it for a preamplifier. That is an understandable mix-up given how compact the unit is (434 × 97.5 × 270 mm, 5.2 kg). It's not a preamp. It's a full integrated amp, just a modest one. One eBay listing in April 2026 asked $319 for a working unit, and a Vietnamese listing priced one at about 1.2 million VND. A current Avito listing in Obukhovo, Russia, shows another example in "excellent" condition, though no price is given.
The PMA-910V isn't a famous model, and it won't drive difficult speakers, but it represents a clean, honest slice of Denon's mid-80s approach: sensible power, low distortion, and a deliberately simple signal path.
- Rated output: 35W + 35W (8Ω, 20 Hz–20 kHz)
- Dynamic power: 70W (4Ω)
- THD: 0.003% (1 kHz, 17.5W, 8Ω)
- Frequency response: 5 Hz–150 kHz (+0/−3 dB)
- Phono MM: 2.5 mV/47kΩ · Line: 150 mV/30kΩ
- Dimensions: 434 × 97.5 × 270 mm · 5.2 kg
- Price (Japan, c. 1986): ¥33,000
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