GroupDIY member Gemini86 has adapted Gyraf’s highly-regarded G9 tube preamp to the 51x Alliance format.

Images:

Features:

• Input transformer options:
  • Cinemag CM-75101APC
  • Lundahl LL1528
  • Ed Anderson EA2622
  • OEP A262A3E
• Output transformer options:
  • Lundahl LL5402
  • OEP
• High-pass filter 50Hz/150Hz
• Phase switch

Price: $18 for PCB

More info:

• Order via the GroupDIY thread