Texas Tone™ RCA 12AX7
This is the real deal, a USA made RCA 12AX7 tube!
The RCA 12AX7 is arguably the best sounding USA made tube available, and they're getting extremely hard to find. If you want your amp to sound it's absolute best, this is the one. I actually have several of these. They are commonly used as preamp and phase splitter tubes. $130.00