- Nov 26, 2008
I also used Marstran iron, OT and PT (in my JTM45RI build back in September 2003) and Brian's transformers are killer. Puts right at 450 volts on my GEC KT66's just like my '65 Block Logo JTM45 with RS transformers did.
Interesting, I kept the original PT in my JTM45ri. I'm getting about 408v on the plates, pin 3 of the power tubes. I would like to get more clean headroom from this amp. Did you use Brian's Reissue JTM45 PT (789-84) or the standard JTM45 PT (1202-55)?