I been a budget minded hifi fan who tinkers every 5 years or so. So here is the current system I have. I am still looking into swapping out the integrated amp and possibily speakers to towers.
Hey, sweet little system you've got there. If you decide to go the tube pre/ amp ss route, I'd recommend highly a used Sonic Frontiers pre. They are cheap, built like tanks, only one tube to worry about so you don't have to be an expert, ultra reliable, and sound great - perhaps not as refined as some of today's best, but plenty good. Also, much as the CA stuff has gotten great reviews, if you stick with a int. amp, you might want to look at Xindak. Great tube-like sound, and build for the buck that no American company can compete with. Cheers! b