So, I've been using my WA33 EE JPS as a pre to my CFA3 now, instead of my now sold 3ES. The with the TCs, the bass extended lower and is more prominent with the 300B 3ES. The WA33 and it's 2A3 tubes, etc., are more 3D for sure though. It brings a more tubey sound too. The bass is a little worse, but not terribly so. I need to listen to the WA33 as a pre more, but I think I preferred the 3ES as a pre, with the 300B tubes. I may try to get a dedicated 300B pre
What 2A3 tubes are you using?