I own the C15 preamp, and it is a great one. Just know it is a no frills preamp, not having seperate record circuits. However, it does have a remote, which is a must have for me. Mine is paired with a MC7200. I also owned a C712, which is similar, and a good one. Download the manual for whichever you're thinking about, and see the details. Both models seem to go for somewhere around $800-900.