Looking for all the gain you can get? This is our High gain Option Retube Kit for the Blackstar Stage 60 Amps. It contains two Handpicked High Gain ECC83S's and a Current Balanced ECC82 for the phase inverter along with a Matched Pair of JJ E34L's for the power section but you can configure this kit to use the JJ EL34II's, EL34’s, KT77’s or Big Bottle 6CA7’s by clicking on the "Customize" button.