Other tube preamps with HT passthroughs you may want to consider: Sonic Frontiers, Rogue, PSE. Great way to seamlessly integrate tubes into your HT system. By the way, are you using the EAD as a DAC?
Whether this will benefit your system goes to personal tastes, and obviously only you can make that call. I would guess the EAD does a decent job with 2-channel, but tubes are a different animal and may or may not yield an "improvement." Of the preamps I listed I found the SF and PSE to be more neutral and Rogue to impart more of the warmth that many traditional tube lovers crave.
I believe once you start demo-ing some of the tube preamps in your system the answer will come pretty quickly and easily one way or the other. Best of luck.
Tim
Whether this will benefit your system goes to personal tastes, and obviously only you can make that call. I would guess the EAD does a decent job with 2-channel, but tubes are a different animal and may or may not yield an "improvement." Of the preamps I listed I found the SF and PSE to be more neutral and Rogue to impart more of the warmth that many traditional tube lovers crave.
I believe once you start demo-ing some of the tube preamps in your system the answer will come pretty quickly and easily one way or the other. Best of luck.
Tim