Amp/Preamp Asylum

Replace the PSU's SS diodes with Low-noise

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soft recovery Schottky diodes, AND up the capacitance in the PSU to about twice the OEM uf total. And, bypass the last two PSU caps with MF PP* caps.

Then listen, then replace the negative-feed-back-loop caps and Rs with commercial quality teflon caps and Holco or laser trimmed Rs. Possibly do this before recapping an re-R-ing the audio stages.

Re-listen. and then budget for replacing, any and all electrolytic signal caps with commercial quality *metallised-film poly-propylene caps. Replace all the signal Rs with decent metal-film Rs.

I doubt that these last changes will be audibly the most significant.







Warmest

Tim Bailey

Skeptical Measurer & Audio Scrounger




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