The matched quad of the Mullard CV491 Long Plates cost me a small fortune. They sound great and were the seated “incumbents” in my reference system. It was time to stop enjoying for a second and get into some serious listening with two other great tubes: the CBS-Hytron 5814 and Westinghouse 12au7 Carbon Plates.
Finally arrived. The expectation was I’d be paddling through rolling waves of mid-range. That’s not happening. These things are dynamic and they have drive. The tone is crazy. It’s like the music is coming from another dimension 🙂