Tube Amp Doctor 12AX7 / ECC83 REDBASE™ Premium Preamp Tube – StewMac

Tube Amp Doctor 12AX7 / ECC83 REDBASE™ Premium Preamp Tube

Designed for medium and high gain amps, this premium 12AX7 tube will instantly upgrade you amp’s tone and performance. With responsive gain and defined bass, full mids, and dynamic highs, it will unleash what your amp can really do.  

Voiced for clarity, it’s ideal for capturing the nuances in your playing. The low noise and balance makes clean and overdriven tones sound rich and never muddy. It’s an upgrade for any 7025, 12AX7, CV4004, CV492, ECC83 or E83CC tube.

With REDBASE, Tube Amp Doctor has refined everything about its tube selection process. Each REDBASE tube is made exclusively to their specs, then tested in Germany with an additional burn-in treatment and matching process to ensure flawless performance