Denon PMA-280 (1992–1995)
A compact stereo integrated amplifier from Denon's early '90s lineup, rated at 45 watts per channel into 8 ohms.
Overview
The Denon PMA-280 is a solid-state stereo integrated amplifier, produced between 1992 and 1995. It puts out 45 watts per channel into 8 ohms, enough for a range of bookshelf and small floor-standing speakers of its era. It measures 434 × 120 × 279 mm and weighs 6.1 kg. Full specifications are sparse. Used units turn up on the market as working vintage pieces, often noted for clean power delivery and for fitting in with typical hi-fi systems of the 1990s.
Design
At least one known PMA-280 has been restored and recapped to deal with aging components. A troubleshooting report on AudioKarma says a unit with no output sound may have a problem in the output stage. That means the output transistors and the nearby resistors, capacitors and transistors. It points to a conventional solid-state output topology, typical of Denon's design approach at the time.
Market
In February 2024, a user on Reddit (r/BudgetAudiophile) reported buying a second-hand Denon PMA-280 for €70 as part of a budget vintage setup. Listings on Reverb and HifiShark show continued interest among budget-minded audiophiles and restorers, though pricing data beyond this one report is limited. A common issue is complete loss of sound, which means diagnosing the output section.
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