Musical Fidelity makes just the thing for you. They are called tube buffers and some people swear by them. Sam Tellig was a big fan of those things when they first came out. He used them between budget CD players and preamps or integrateds.

Tubalizer is cheaper and adds a nice sound to my SS system.
http://www.audiodigit.com/index.php?section=81

Ruben,first-of-all,you can't do that,simply for technical reasons.A pre amplfifies the signal from a cd player and it's output characteristics(of the pre) are different,so.in a few words,you can't connect a pre to a pre.Also,even if you could do that,the signal would be compromised having to pass through 2 pre-amplifiers.The way i see it,you have 2 solutions.You either connect your cd player through a tube baffer as Monty recommended or purchase a new,good tube pre amplfifier with remote control.

Of course you can hook teh out of one preamp to a line level in to anotehr pre amp...just be careful with levels, start everything with the vol way way down, until you get a feel for what it's gonna do level wise. the output of one pre amp is just a controlled high level signal, just like from a analog CD out..or tuner or cassette deck..volts is volts only Phono is a different thang