Fender Red Knob Twin Reverb Retube Kits

Fender Twin Reverb Full Retube Kits. Regardless of your style and application we have you covered!

All of our Fender Red Knob Twin Reverb full Retube Kits are designed specifically for these amps. Every kit is configured to provide a specific sound/experience.

The Default power tubes for these kits use the Special Double Mica version of JJ’s 6L6GC-DM (found only at ET). The Double Mica modification has no effect on the sonics of the tube, it simply helps to reinforce the internal assembly to minimize the chance of tube rattle. However you can use the drop down to select the JJ 5881’s for an earlier breakup and a great jangle.

These amps are adjustable bias and the bias must be checked and adjusted as necessary anytime you swap power tubes. amp does have test points however the process is archaic so we use probes. The All you need to adjust the bias is a bias probe and a multimeter or the Eurotubes “Pro One”. We typically bias the JJ 6L6GC between 36 to 44mA or the JJ 5881’s between 35 to 40mA

The Standard Retube Kit is as close to OEM as possible. Maintaining the amps stock level of headroom and gain while providing a warm but even handed overall sound. The kit includes one matched Quad of JJ 6L6GC-DM’s by default, five ECC83S’s for V1, V2, V3, V5 and V6. One Standard JJ ECC81 for V4, and one current Balanced JJ ECC81 for the phase inverter in V7, farthest from the input jacks.

The Gold Pin Retube Kit uses the JJ ECC83S Gold Pin variants to provide a smoother, creamier, and more singing overall sound. This option is less aggressive and has less “teeth” when driven hard. If you like a classic raunchy gritty overdriven tone, we recommend looking elsewhere… If sweet, open, and more refined is what you’re after this kit will do it. The kit includes one matched Quad 6L6GC-DM’s by default, five Standard Gold Pin ECC83S’s for V1, V2, V3, V5 and V6. One Standard Gold Pin JJ ECC81 for V4, and one current Balanced Gold Pin JJ ECC81 for the phase inverter in V7, farthest from the input jacks.

The ECC803S Option Retube Kit The JJ ECC803S’s are a little lower in gain than the ECC83S and have a very fat mid and a little hotter high end which gives a very vintage tone with lots of chime. This kit contains a matched Quad of the 6L6GC-DM’s by default, five Long Plate Standard JJ ECC803S’s for V1, V2, V3, V5 and V6. One Standard ECC81 for V4 and one current Balanced JJ ECC81 for the phase inverter in V7 farthest from the input jacks.

The ECC803S Gold Pin Option Retube Kit a vintage vibe that’s richer and smoother. This kit contains a matched Quad of the 6L6GC-DM’s by default, five Long Plate Standard Gold Pin JJ ECC803S’s for V1, V2, V3, V5 and V6. One Standard Gold Pin ECC81 for V4 and one current Balanced Gold Pin JJ ECC81 for the phase inverter in V7 farthest from the input jacks.