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 40R 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 Electronic E34L's 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!