A classic of the 80/90 years
High power given the supply of tubes
8 x 6550 providing 100 + 100 watts on 4/8/16 ohm
The device has been completely overhauled, the bias of the final valves has been fine-tuned, the valves all controlled, in full efficiency and excellent matching
The 6550 are Svetlana "C" logo !
Like all the Audio Research endings of that generation, it suffers from a slight "bump" at the shutdown, which can not be eliminated as admitted by the manufacturer itself.
"It should be noted that the D-70, D-115 and D-250 ARC amplifiers all have a mild
turn off noise which is perfectly normal for these units. The mild turn off
noise according to Audio Research is caused by a temporary DC offset and does no
harm to the amplifier or speakers in any way."
In any case we have carried out all the necessary checks and we can confirm that apart from the annoyance that this can generate, it is a mild and low intensity spike, so we confirm as well what was confirmed by Audio Research.
One year warranty
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