Gerry O’Hara

Hi Stefan,

Interesting amplifier project you have there. I bought some used/tested 01A’s from George Fathauer down in Arizona a few years ago for $10 each but I understand that he sold the business last year. These tubes are available from a wide range of sources on the internet though, however NOS ones can be expensive (eg. almost US$60 at AES) – a bit much to deck-out your average mid-1920’s 5 tube TRF… If you find a low-cost source let me know!