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Bizarre pre-amp / DAC issue

thecrowe

Standard Member
I recently got hold of an old set of Exposure equipment: VII preamp, 2x VI power supplies and a VIII amp, and an HRT Music Streamer II. Now imagine my disappointment when I one speaker is much quieter than the other and distorted! Furthermore I can't track it the problem down to one bit of the chain: the HRT straight into the amp comes out balanced, and so does any other input through the preamp then amp. Is this a power/grounding issue between the HRT and preamp? The preamp is the dual power model, with one DC input from each power supply. Switching left and right outputs on the DAC doesn't change the bad speaker, but switching pre-amp output does so I know it's always the same preamp channel coming out bad. Any help or pointers would be great!
 

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