Agree. I found their main characteristic to be punchy in the mids, sometimes to much, as in the combination with the 596, IMHO of course. They seem pretty well behaved with the EML so the bass is not so much overshadowed by the mids, and that works pretty nicely for me. What would be some of your suggestions?
I don't have the benefit of having heard the 596-- and I'm not sure I ever will. Even if I came across a pair-- I'm anxious about a big cash outlay for two tubes that may not match. I've been burned by this in the past. I love the EMLs anyway and I'm not anxious to give them up.
I'm more on a hunt for the ultimate 6SN7. I don't think I've found the perfect tube yet. Sophia makes a 6SN7 tube I may try-- and there I've read that Sylvania has a 6SN7 with the bass punch I'm seeking. I have a pair of RCAs which are ideal in the bass-- but they go sibilant too easily, which I find annoying.
They other way to get there may be to keep the 181's but try the Sophia Royal Princess 300B-- which is supposed to have a ton of bass punch. But that's a $1200 dollar 'experiment' I'm not anxious to conduct.