I have a pair of klipsch lascala's and an old 2330 Marantz receiver. I would like to upgrade my Amplifier which is a Yamaha I've been using temporarily due to lack of funds. Everyone recommends various tube amps but they're priced a little bit above what I wanted to spend which is ~$1000 or less. Hence I started looking at Nad integrated amps (c372 or c272 with preamp). Also am looking at Nad c272 but that would require a preamp.
Is there a big advantage to having a separate pre amp as opposed to an integrated?
Any comments regarding the c372 specifically the compatibility with my lascala's?
Any other amplifiers out there for less the $1000 that I might consider?