SilverFox Posted June 22, 2012 Share Posted June 22, 2012 What are the tubes in the v1 - v3 positions. If there are any other tubes besides the Reverb circuit, please let me know. I'm considering putting together a Pro 501 preamp and haven't found the tubes indicated on the web schematic I've gotten ahold of. I guess that's the other question- I've found this commonly available schematic for the 501. It seems to be the same one available on several good sites so I'm thinking it is legit. The long 3 tube version. Just saw the attach option, This one- Thanks for any assitance- Fox. Quote Link to comment Share on other sites More sharing options...
Kiwi Posted June 22, 2012 Share Posted June 22, 2012 Mazda EC833's in the preamp section normally Nick. KT77's in the power amp section. Quote Link to comment Share on other sites More sharing options...
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