I use a Supratek Preamp and Sim audio W8 with VR4jr, sound is just incredible, can't imagine things getting any better, until I get my VR5SE of course. Hehehehe. I have tried various amps/pre combos and I find high power stuff sounds best, with tubes in the mix somewhere, or else you are not hearing the full potential of these speakers IME. The Sim Audio W8 is so refined and powerfull, it just makes everything so effortless, the clarity and ultimate transparency is quite uncanny. Yet it still retains all the musicality I could ever want.
good listening
good listening