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12AY7 Mic Pre

Electro-Harmonix 12AY7 Mic Pre
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Electro Harmonix 12AY7 Mic Pre Amp Modifications

Update: I just finished doing all the mods. Well except for reversing the power LED, and I'm still using the stock 12VAC adapter. Would it be too much trouble to get you to post the voltages you are measuring for each tube? I don't believe these are right, but I'm getting the following: 12AY7: pin...

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Best inexpensive pre-amps?

Its a shame no one has mentioned the Electro Harmonix 12AY7 Tube Mic Pre. Discreet audio path, Class A, full power to the tube plates. Hands down the best inexpensive pre out there. Replace the crappy stock tubes.

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using multiple parallel coupling caps.. is it ok?

Hello all - I'm looking at replacing the coupling caps on my ehx 12ay7 preamp - they're blocking approx 100v and the spec is 250v 47uf in a 16mm dia with max height of 18mm - space is pretty tight and there's a different circuit board right above.. circuit here in an article by the...

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