Search results

Synergy/MTS Forum

Help Support Synergy/MTS Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
  1. A

    RH50T phase inverter tube - 12at7 or 12ax7?

    Hi, thank you for your reply. I'm not much of a tube amp expert, but as I understand it, you need to use different types of for example plate resistors for 12AX7s and 12AT7s, and since i don't know the schematic for the RH50T and bought it 2nd hand, i was just wondering what gets in there for...
  2. A

    RH50T phase inverter tube - 12at7 or 12ax7?

    Hi, i just got a Randall RH50T Head (i think it was built in late 2005, at least that is the date on the EH power tubes), and found out that the phase inverter tube is marked as 12AT7. I wonder if this one shouldn't be a 12AX7, like the preamp tubes, too? Thank you for your advice!
Top