Denon PMA-390AE (2006)

Name: Denon PMA-390AE
Brand: Denon

The Denon PMA-390AE is a pre-main (integrated) amplifier released in March 2006 at an original price of ¥43,000. It's a Japan-market model. The "AE" suffix and the 100 VAC power supply confirm that. It came in two finishes, premium silver and black. It sits in the PMA 390 series, but documentation is thin on exactly where it sat relative to its siblings, including the closely-named PMA-390SE and PMA-390RE.

The spec sheet shows a well-thought-out budget-to-midrange integrated amp. It's rated at 50W + 50W into 8 Ω (20 Hz-20 kHz, THD 0.1%), with a maximum practical output of 100W + 100W into 4 Ω (JEITA). Denon put real engineering into the power section: an HC (High Current) single push-pull circuit derived from the UHC design used in their higher-end machines. It uses HC transistors with twice the current supply and peak current capability of conventional types. A Schottky barrier diode in the rectifier, separate transformer windings for analog and control circuits, and a dedicated standby transformer all point to attention to noise and efficiency. Standby draw is rated at 0.2W or less.

The preamp section is just as capable. There's a phono equalizer amplifier handling both MM (2.5mV/47kΩ) and MC (0.2mV/100Ω) cartridges, with RIAA deviation of ±0.5 dB across the audio band. A source direct function bypasses the tone, loudness, and balance circuits for a cleaner signal path. An inert gas-filled relay handles input switching for CD and phono. Signal-to-noise is rated at 107 dB on line with Source Direct on. There's also a pre-out terminal and a Rec out selector, which go beyond the basic integrated-amp formula. The included system remote controls volume, muting, and power, and can also operate Denon CD players and tuners.

The internal layout uses what Denon calls S.L.D.C. (Signal Level Divided Construction). The microcomputer's clock stops during normal listening to eliminate digital noise. The frequency response is rated from 5 Hz to 100 kHz (±3 dB). It weighs 7.1 kg and measures 434 × 121 × 337 mm.

The record on this model is mostly specifications. No period reviews from major publications have surfaced in the research. The only reception data comes from secondary-market listings, where sellers describe units as being in good cosmetic and functional condition and note the 100V requirement. A used unit sold on Yahoo Auctions in late 2025 for ¥2,800 (described as "electrification only," i.e., powering up but otherwise untested). Another listing in March 2026 reached ¥9,999. A Russian listing asked 25,000 ₽, and one Japanese retailer offered it at US$299. There's no documented information on common failures, spare parts, or long-term reliability.

Rated output: 50W + 50W (8 Ω, 20 Hz–20 kHz, THD 0.1%)
Maximum practical power: 100W + 100W (4 Ω, 1 kHz, JEITA)
Phono: MM 2.5mV/47kΩ, MC 0.2mV/100Ω
Frequency response: 5 Hz–100 kHz (±3 dB)
S/N: 107 dB (line, Source Direct ON)
Power consumption: 150W; 0.2W standby
Dimensions: 434 × 121 × 337 mm; 7.1 kg