Audio Research D-70
Tube stereo power amplifier
FRONT PANEL : Anodized silver or black. Line fusing. Line led indicator. Power switch. Circuits led indicator. Circuit fusing. (The left led indicator lights when power is applied, and the other comes on once the 320V line has reached a threshold voltage, which takes a second or two. This latter indicator works as a monitor for the series regulator circuits.
PANEL : Channel 2 speaker output (4-8-16 Ohms) – Channel 2 / 1 inputs
– Channel 1 speaker output.
ARC introduced D-70 in 1983. In 1984 were introduced his new version D-70 MKII which has different tube complement.