I have just upgraded my amp and preamp (Adcom GFA-5500, GFP-710) with a Conrad-Johnson MF-2200 amp and PV-7 preamp. They are used but in terrific condition. My present speakers are Dahlquist DQ-10s (completely refurbished and upgraded about 2 years ago) and a Regnar subwoofer. The difference in the amp and preamp was absolutely amazing but also revealed the deficienices of my old DQ-10s, especially some harshness at the high end. I was so amazed that I am now willing to let go of some money on speakers (yes, I'm so cheap I squeak!). Probably 3k to 6k.
I listen to about everything (except opera) but mostly rock (Dylan, Moody Blues, Hendrix, Knopler, Eagles, etc.). I don't listen at window shaking volumes but medium to high. I play a lot of vinyl (Music Hall MF5.1, Grado Platinum reference), redbook CDs, SACDs, and DVD-As (Marantz Universal). My listening room is large (25' X 20') with wood floors and cathedral ceilings. I could move to the rec room downstairs of the same size but it has 8' ceilings and ceramic tile floor.
Two of my friends have PSB speakers (Synchony One and Platinum T6) which I like very much but not sure how well my CJ MF-2200 will drive them. Same with another friend that has Canton Vento 890 DCs. What do some of you suggest I audition?