In article .com,
Bo-Lennart wrote:
Well, about the input modification. (transformer at the input). It
seems that it might have been done at the factory.
Do You think the Swedish Television ordered a custom-tailored
version???

Quad were happy to supply their amps with balanced inputs for pro use.
With the '3' range they made the 50 - a single amp in a 303 case with
transformers in and out. Or at least the 100 volt line one had an output
transformer - not too sure about the low z version, but I think it had.

--
*Seen it all, done it all, can't remember most of it*

Dave Plowman London SW
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