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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Upgrade of ST-70 posted by Stewen on December 31, 2008 at 06:10:35:
Greetings- If you have chance to get a Blackburn Audio board, grab it while you can as I'm not sure that they are still being produced??. I previously had the Triode Electronics Board (EF-86/ 12AU7 or 6cg7)in my ST-70 and was quite pleased with the improvement over the stock board , until I built and installed the Blackburn Audio board.In my opinion, in my amp, The BA board bested the Triode board by a large margin.I used the Russian .22 uf oil caps as well as a few other premium components. You will however, need to install either an additional 6.3 volt filament transformer (Leeds Radio, NY- less than $10.00) to handle the extra current demand of the octals, or one of the "new uprated" PA-060 power transformers.Keep the tube rectifier, it will sound better. regards, wpod
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- RE: Upgrade of ST-70 - wpod 12/31/0811:08:20 12/31/08 (0)
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