Is Preamp overkill for me?

I second Rsbeck's suggestion of looking at Placette. If you are interested in purchasing new, Placette offers an in-system trial, so you can try it in your system, and if you don't like it, return it.

Or you can get the basic RVC (since you only have a single source) here on A-gon for pretty decent price.

I've got a Placette passive pre that I use with a Wadia 861. Very transparent, very nice.

My 2 cents worth.

Proper impedance matching and making sure there's enough current available for good dynamics seem to be the two things an active preamp is most useful for. I've used a transformer based passive for about a year, and have been very happy with it. I just got a Morrison ELAD, which is a quite inexpensive ($780), well-made active preamp with two inputs and two outputs. It has dual volume controls and a very nice separate power supply, but no other features. My early experience with it in my single-source system is insanely positive.

Under your single source circumstances, it may be possible to get a CDP with analog volume control or power amp with level controls.

Get Adcom GFP750 and there you'll at least know what you realy want since it could work in active and passive modes.

Try the Sonic Euphoria that the dealer offers here on Agon, I think with a trial period too. It was sweeter then the Placette audio passiver preamp with better bass. With a passive you have to make sure it mates well with your amp. The SE was a real bargin when I tried it and I would have bought one if I did not already have a very expensive tube preamp that really was not much better, so try it for the price.

Happy Listening.