Sony TA-2000F Preamp Overhaul

From Rain City Audio:

This venerable Sony preamp was seen at Rain City Audio last September 2015 when it came in for an evaluation. That check-up revealed a clean bill of health at the time, but over the past several months of active service, the original components worn down and started creating problems.

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This preamp is very overbuilt, with the different circuits on modular plug-in cards for easy removal.

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Component replacement was uneventful for the plug-in cards, although there were some strange value capacitors that I’ve never run into before, like some 150 uF capacitors, and a set of capacitors rated at 3.15V.

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There were 4 more capacitors hidden on the phono amplifier board behind the main panel:

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Time to replace the main electrolytic capacitors as well. The originals were replaced with new long-lifetime, high-ripple Kemet models made in the EU, and upgraded to screw terminals.

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Now for checks and adjustments:

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Everything cleaned up and came into spec nicely! Time to measure with the Audio Precision System One.

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Overall frequency response looks great, and zoomed in, the channels are ~0.3 dB separated from each other. Very close!

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And look at that almost perfectly matched RIAA curve for each channel after service.

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Quite a few parts came out of this one! It’s going to sound fantastic for a long time to come.

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One Response to Sony TA-2000F Preamp Overhaul

  1. David DeRosier says:

    Nice job. A very well built unit.

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