Thanks to Michael Keating for playing the acoustic guitar for these preamp tube tests. The mic originally had a Mullard (who knew?). I always had a General Electric version in deference to my father’s 45 years with them, I recently purchased a Hammond (by Mullard) and an Amperex.




Nothing is easy, but the Amperex is staying in the microphone … for now, with the GE a close second.