Looking to warm up your Lucky 13? This is our Standard Retube Kit for the Soldano Lucky 13 50 watt Heads and Combo Amps. It uses six ECC83S's with one being current balanced for the phase inverter in V6. The default power tubes are a matched pair of the JJ 6L6GC's but you can configure this kit to use the JJ KT66's or even the JJ 5881's to drop the power output a couple decibels by clicking on the "Customize" button!