Yamaha R-2000

Not much information on the Yamaha R-2000 has survived. What the record shows comes almost entirely from period advertising and a handful of magazine mentions. It was Yamaha's top-of-the-line R-Series receiver, and it had a built-in Spatial Expander circuit. The circuit was designed to recreate the depth and presence of a live performance beyond the normal stereo spread between two speakers. HiFI-Stereo (1982, p.53) called the R-2000 "the next step beyond stereo" and noted that its X-Amplifier was the most powerful Yamaha had ever put in a receiver at the time: 150 watts RMS per channel into 8 ohms, 20-20,000 Hz, with 0.015% THD.

Past those two features, the Spatial Expander and the high-power X-Amplifier, little else is documented. No production years, original price or complete spec sheet has turned up in the usual service literature. The R-2000 appears to have been a short-lived flagship, likely introduced around 1981.

Type: Stereo receiver
Power output: 150 W/Ch RMS into 8 ohms (20–20,000 Hz, 0.015% THD)
Notable features: Spatial Expander circuit, X-Amplifier topology
Period sources: HiFI-Stereo (1982, p.53); Audio (August 1981, p.62); High Fidelity (September 1981, p.18)