Denon AVR-810 (circa 1991–1992)

Little is documented about the Denon AVR-810 beyond a handful of period advertisements. The record shows it was a Dolby Pro Logic surround receiver, positioned alongside Denon's AVC-3020 surround amplifier and the lower-tier AVR-610. A 1991 ad in HiFI-Stereo (November 1991, p.17) claimed the AVR-810's Pro Logic processor delivered "greater dynamic range, more channel separation, lower distortion and precise low level" performance compared to earlier analog or digital decoding circuitry. That is standard promotional language for the era, but it shows Denon was pushing the receiver as a high-fidelity home theater component and not a gimmicky effects box. Another ad from Audio (December 1991, p.30) repeated a similar claim.

The only concrete specifications found come from a dealer listing in HiFI-Stereo (July 1992, p.88). It described the AVR-810 as a "265 Watt AN Surround Receive" - presumably a mis-OCR of "265 Watt AV Surround Receiver" - with "5 Channel 16 AM/FM Presets" and a "Dolby Pro Logic Prog Remote." The snippet doesn't say whether the 265-watt figure is total system power or a single-channel rating. No service manual, user guide, or independent review measurements have surfaced.

Known claims from period advertising (not independently verified):