There was talk of the dedicated headphone amp, the 2A3mk3, in a BA chassis.LOL, I should put a guide to current and proposed (vaporware) EC amps together.
Well, the 2A3mk3 doesn't exist. The 4-45 is a secret menu item which doesn't officially exist, although I would definitely inquire about it to see if he's going to make another run.That leaves the new BA and 2A3mk4. Hard to say which is better for headphones because of so many variables, tubes, etc. I'd say go for the mk4 if you run orthos or speakers. If you like the 300B tube, go for the BA. I suspect the BA would be more a touch more resolving despite the interstage cap because of the Cinemag OPT is really awesome. The mk4 may be cleaner and faster sounding. It's really a sidegrade between those two. Of course if there's ever a Cinemag 2A3 equivalent of the 445 OPT, that could change things.The 4-45 clearly destroys both. Never heard anything quite like it. (I've only heard it with the AD2000 and modded HD800.) As Anax and Craig both said, it's the only amp so far which has reminded them of the original Levi.
