Want FAT mids and some extra high end sparkle when you switch to the 12AX7 V1 mode? This is our ECC803S V1 Option Retube Kit for the Bad Cat Cub III 30R Heads and Combo Amps. It uses a Long Plate ECC803S in the second position along with four ECC83S's with one being current balanced for the phase inverter, an EF806 to replace the EF86 in V1 and a GZ34 rectifier tube. This fattens up the tone when you're in the 12AX7 V1 Mode. 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).