Having had quite a few Fisher 80Ts over the years, I'm a fan, I think the 80 series tuners sound great and the preamp in the 80T, as I understand it, are basically 50cs. Recently I picked up a Fisher 90T tuner/preamp and was wondering if the preamp in the 90T is comparable to any of Fisher's individual component preamplifiers? I plan to test the tubes and bring it up on a variac to see how/if it works. My experience with 80Ts is 100% as far as them coming up on a variac and functional! Either I'm very lucky or these things are extremely well made with quality components-which would be my guess, I'm not THAT lucky! Anyway, if this has been covered, I apologize. I did do a couple of searches but didn't find what I was looking for. Feel free to direct me to a link or elaborate here, either is great!