I agree with the comments about your getting into analog. The advise about the Conrad Johnson ART and the Counterpoint SA9 are both correct. Another option for best choice in a preamp is the Callisto from Aesthetix. This is the preamp from the Jim White, who designs and builds the IO phono. I know you will not believe this, but I would not be surprised if your system was improved by putting the Callisto between the Wadia and your amps. I know this flies in the face of what you believe, but there are other things in a system that matter, such as gain, loading, impedance, and capacitance of your chosen interconnect cable, and the input sensitivity and drive requirements of your amps. I have seen many circumstances where the addition of a ultra high quality preamp not only did not hurt, it helped! By the way, like David99 says, go with tubes, (like the Aesthetix is).
My Only Question Is.........
Would someone please tell me the name of the preamplifier(s) on this planet that when inserted into the signal path between any recent Wadia cd player and any amplifier, IMPROVES upon the sound of the forementioned Wadia when compared to running it direct using its digital volume control near its peak. Remeber contestants that the better the preamp the less it imparts to the signal. Keep in mind also that answering this question intelligently would require that you have actually tried this.