Want some real Thunder! This is the Standard Retube Kit for the Traynor YBA200 Bass amps. For the front end this kit contains two ECC83S's and one current balanced ECC82 for the phase inverter. The default power tubes are a matched quad of the JJ Electronic 6550's however you can configure this kit to use a quad of the JJ KT88's for a little more power and depth by clicking on the "Customize" button!
The Traynor YBA200 has a bias compensation circuit but is basically a fixed bias amp so for a good warm tone we default to a matched quad of either the JJ KT88's or 6550’s in a moderate grade which are plug and play.