Here at Eurotubes two our favorite tubes to run together are the JJ KT77's and KT88's and the Herbert is made for this! This is another all "KT" Gold Pin Option Retube Kit for the Diezel Herbert with KT88's and KT77's! It contains six Gold Pin ECC83S's with one being current balanced for the phase inverter in V6. Less grit and a very lush tone!

The power tubes are a premium matched pair of the JJ Electronic KT88's and a quad of the KT77's. The KT77's provide the high end sizzle and chunk which mixes really well with the fat thunderous sound of the KT88's, together are very harmonically complex! A great combination!

If you choose to use the KT66's, 6550's or KT88's and your amp has the "Bear Trap" style tube retainers you may want to swap these out for the "Spring and Cap" style retainers. These mount using the same screws as the stock retainers.

Unlike other tube venders who charge for low noise tubes, all our tubes meet rigorous tests for low noise, microphonics and nine additional tests.

If you want all the power and fidelity to get from your amp to your speakers then check out our custom made 10 Gauge speaker cables in our Reverb storefront. These cables are the largest cables made and leave no frequency unheard!

The video below shows both our preamp tube testing and power tube matching procedures here at Eurotubes which are second to none. We may not be the cheapest, but we are arguably the best.

Doing what other tube resellers say "can't be done" since 1998

Shipped and insured by Priority mail which is a 2 to 3 day delivery!