Want a very smooth and rich tone with less grit? This is our Gold Pin Option Retube Kit for the Bad Cat Lynx 50 Amps. It uses four Gold Pin ECC83S's with one being current balanced for the phase inverter. 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!