Do you like FAT mids and and some extra high end sparkle? This is our ECC803S V1 Option Retube Kit for the Gibson GA 20RVT Combo Amps. It contains a Long Plate ECC803S for V1, two standard ECC83S's for verb V3 and V4 along with two ECC83S's with one being current balanced for the phase inverter in V5. The power tubes are a matched pair of the JJ 6V6S's.