I've been using an OBH-12 for three years (maybe longer?) and have used it with the following amps - Mesa Baron, Cary 572s and 2Abs, Transcendent Sound OTL T8, and now have an Audio Electronics Supply Super Amp Sig., DJH edition. It's worked great with all amps. I've used it with a Micromega Stage 3, Sony ES777, and Marantz 4000SE w/ Perp. Tech. dac and digital engine, same good results. I think the vast majority of CD players have enough output for the Creek as does your amp. The only thing is, you don't get any editorializing, sweetening, etc. with this piece. Dynamics increase, solidity increases, and the sound becomes freer from the speakers. You will, however, hear exactly what your amp and Cd player sound like. Oh yeah, the remote volume control adjustments are not as precise as I'd like.
Passive Preamp Problem
I am looking to find a passive preamp to replace my nakamichi ca-7a. But I read somewhere that you need to match your components' correctly for a passive preamp to have good results. But I don't know how to do that. My DAC is a Cal Audio Sigma with 2vrms output with 2ohm output impedance. And my amp is an Aragon 8002 with 120mB for 1watt output input sensitivity and 22k ohms input impedance. I am not sure what all these figures mean. I hope someone here can help me figure it out whether a passive will sound good with my gear. I am contemplating on getting the Creek obh-12.