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Anyone ever heard or used this before? Wondering how it would work on older 1940-50s amps. Where wall outlet voltages were a good 5-10 VAC below today's. How much amp dynamics would change, in those amps.Thanks!
Edits: 12/29/16Follow Ups:
....many of us have been using variacs, or bucking transformers, for years. Unlike the Brown Box, variacs are continuously variable, just make sure to get one of sufficient current rating.
I have no experience with the brown box but to put another thought in your head....
I acquired an RCA ISOTAP wp-26a back when increased line voltages were becoming the quibble of the day. On older unrestored equipment it probably saved me a few exploding caps. On new or restored gear it functions best as an isolation transformer on playback gear and preamps, which differentiates it from the Brown Box. I think I paid $50 way back when. They still come up in differing models Wp-25, 26, 27 on the bay.
Edits: 12/30/16 12/30/16
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