Want the smoothest richest tone possible? This is our Gold Pin Option Retube Kit for the Blackstar Artisan 15 Heads and Combo Amps. It uses two Gold Pin ECC83S's, a Gold Pin EF806 to replace the EF86 and an EZ81 rectifier tube. The default power tubes are a matched pair of the JJ EL84's. With the Customize option you can configure this kit to use the JJ EL844's which will drop the power output a couple decibels (ideal for players wanting decreased headroom/output).