Hello, here's a vote for keeping the Powermaster. I have a PM 2000 as well, and fwiw, I think you will be hard pressed to do better for equivalent money, and even for quite a bit more. I ran a pair of studios with the EAD to tremendous results, and frankly, having also run them with a Levinson 333 I was unimpressed. Bi-amp with the PM and all's well. Great amp with great gain. As far as the Pass suggestions go, I sold my studios before I could demo with the 350. A great amp, but for the $ I still like the EAD. Just my 2--
Good luck.
Good luck.