Kevin DeSchwazi said:Two pres together won't necessarily give you a nasty sound but it's a complete waste of time (unless you need LOADS of gain?)
The sound quality will only be as good as the weakest link so by putting a good pre in the same chain as a crappy pre you won't be improving the sound of the crappy pre at all.
And of course you're adding more circuitry to the chain as well which will degrade the audio also.
Do you not have line level inputs on your soundcard?