I can't tell you about the power supply but I have owned two of them. Sonically they had incredible bass - like a Decca London - but tracked well. They need a very rigid arm. I measured the frequency response of one and it had response flat to the limits of the test record at both frequency extremes - another had a rising low end. I'd say they were a Technicolor(tm) experience, wonderful, transparent but not especially neutral. For the time incredible transient response - like a thunderclap but nevertheless had very little tracing noise. We called them the "Strange Gauge." I hear that Sao Win still supports them but I do not have an address. Good luck and keep us up to date on your experiments!
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