Tube Amp Doctor RT001
Selected with balanced systems and recommended for guitar amps to improve overall response.
Best for clean tones as well as for sounds requiring deep-bass power like any modern preamp. Recommended for all positions in amps with medium gain level or High-Gain Amps for V2+ positions.
As for V1 in general, but especially for higher gain amps or phono/audio-amps, we recommend the RT010 7025 Highgrade, the RT030 E83CC/7025 Highgrade or RT093-HG 7025-WB Highgrade
The TAD 12AX7A-C can replace any 7025, 12AX7WA, 12AX7WB, 12AX7LPS, 12AX7EH, ECC83 or E83CC.