Looking for more growl? This is the High Gain Option Retube Kit for the Ampeg SVT 100. For the front end this kit contains three handpicked High Gain ECC83S's with one being current balanced for the phase inverter in V3. The default power tubes are a matched quad of the JJ Electronic KT88's however you can configure this kit to use a quad of the JJ 6550's by clicking on the "Customize" button!
These amps are adjustable bias and all you need to bias the amp is a bias probe and a Multimeter or our all-in-one Eurotubes "Pro One" bias probe that reads both the plate current and the plate voltage simultaneously. You can find all these under the Related Products Tab. You can use our Generic Bias Video for reference. The video below explains the difference between bias probe types.