Denon POA-4400 (1984)
The Denon POA-4400 is a solid-state power amplifier from 1984, built around a class A/B output stage. What sets it apart in Denon's lineup of the period is its Non-NFB (non-negative feedback) circuit design. It avoids global negative feedback loops in favor of lower open-loop distortion, and the cost is that it doesn't reach the very high damping factors feedback designs typically get. Denon also listed the POA-4400 as using its "Dynamic Super Linear Circuit" technology.
The rating is 90 watts per channel into 8 ohms and 130 watts into 4 ohms, with total harmonic distortion claimed at 0.003%. Frequency response runs from 5 Hz to 120 kHz (±3 dB). Signal-to-noise ratio is specified at 120 dB, with a damping factor of 100 or better. Input sensitivity is 1.5V through a single rear input, and there are two binding-post outputs. The unit measures 434 x 132 x 363 mm and weighs 12.5 kg. It draws 350W at full load.
Surviving documentation on the POA-4400 is thin. The specs above are corroborated across two independent databases, but no period reviews, original pricing, or market context have surfaced in the record. HiFI-Stereo (1989, p.177) carried dealer advertisements listing the model among Denon's range, but gave no technical commentary.
- Power output: 90W/ch (8Ω), 130W/ch (4Ω)
- THD: 0.003%
- Frequency response: 5 Hz – 120 kHz ±3 dB
- Signal-to-noise ratio: 120 dB
- Dimensions: 434 x 132 x 363 mm; 12.5 kg
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.