You want more gain? Well, it is a high gain Metal amp! This is our High Gain Option Retube Kit for the Blackstar Stage 100 Metal Amps. It contains two Handpicked High Gain ECC83S's and a Current Balanced ECC82 for the phase inverter along with a Matched Quad of JJ 6L6GC's for the power section but you can configure this kit to use the JJ 5881's for a reduction in power by clicking on the "Customize" button.