Motown Direct Amplifier-inspired Preamp?

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ruffrecords

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Nov 10, 2006
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The 12AD7 is basically a low microphonics 12AX7 so that will be fine. The 6AR5 looks like a regular audio output pentode so it should be fine for the output stage. You may need to adjust some resistor values to get it biased right.

Edit: 12AD7 seems to be quite rare. Only one pair for sale on eBay that I could find and the price was over £70 per tube.

Cheers

Ian
 
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