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- Feb 23, 2008
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They do have a bias supply
most plug into the wall. schematics are available.
the really old koss boxes build up voltage from the audio signal
Generated from the audio signal? Quite neat, yet it can't be too good for sound quality.
Generated from the audio signal? Quite neat, yet it can't be too good for sound quality.
I've used the 7sb for years, and it sounds quite excellent. It scales with whatever amp you pair it with.