It almost seems necessary. This will make your Goldfinger VERY smooth and rich sounding with less grit. This is our Gold Pin Option Retube Kit for the Bogner Goldfinger 45 Heads and Combo Amps. It uses a Gold Pin ECC83S in V1, a standard Gold Pin Long Plate ECC803S in V2, a current balanced Gold Pin ECC803S in V3 for the phase inverter, a Gold Pin ECC81 in V4 and a standard Gold Pin ECC83S in V5. The default power tubes are a matched quad of the JJ 6V6S's.