Please recommend preamp

elevick, I did buy the QSC from a professional sound guy. Are you suggesting I simply get a different amp so I'll have more choices for the preamp? I had looked at the NAD C165BEE on this site...my QSC amp would "melt" it?

Thanks for your help.

Looking back at your original post I totally agree with elevick on the QSC. I don't know the JBL 150a but I do know the L100 very well and can only guess they have a similar sound. Not sure with newer more revealing gear you're going to really hear it or might hear the limitations of the older JBLs. Not bashing the JBLs but I'd look at a vintage Marantz 2265B, 2270 or something from that era. What is your current turntable set up? Are you also wanting to run both sets of speakers off the one system? Older Marantz receivers will sound nice and be a good match with the JBLs and I suspect that's the sound you're looking for. Nothing wrong with the pairing.

If you decide on replacing your amp, you might consider looking into an integrated amplifier. At the price points under consideration here, you would be likely to get a greater return on investment. 

Thanks mesch, adg101, and earlier posters. Guess I'm into buying and selling whether I intended to be or not if I have to get rid of the QSC...oh well.

I would be OK with just hooking up the JBL 150As and using my current system for the 4312s. I'm hoping to keep my current turntable, a YAMAHA P-520.

What do you think of using the NAD C-375BEE w/MM/MC phono integrated solid state unit for sale on this site?

(almarg: I did search for the Classe CP-50 or 60, but so far no luck.)
(adg101: I haven't investigated the Parasound yet.)

There's also a local guy selling a Harmon Kardon Citation Series 25 Preamp w/ a choice of 22 and/or 24 Power Amp. The 22 is 200watts into 8 ohms and the 24 is 100 watts per channel.