ARC D-70 (circa 1984)

Not much is documented about the ARC D-70, and what survives comes from a handful of period audio publications. The D-70 was a stereo vacuum-tube power amplifier from Audio Research. It put out 65 watts per channel into 16 ohms with Class AB biasing. HiFI-Stereo (June 1984, p.52) listed the price at $1,995.

The same issue noted that some reviewers considered the amplifier's protective circuitry overprotective. In Audio (June 1984, p.84), one listener said he personally preferred the sound of the Marantz 9s to the D-70. He added that he had heard good reports on the D-70 from people whose listening ability they respected. So the amplifier had its advocates, even if it wasn't universally preferred to the competition.

Beyond these two magazine mentions, almost nothing else is recorded. There are no production run dates, no service manual, no dimensions or weight, and no further review coverage in the Archive's research. The D-70 appears to have been a relatively short-lived or low-volume model in Audio Research's tube amplifier line.

**Known specifications (from period sources):**