bad idea. the phono pre does a kind of EQ on the signal, boosting some frequencies. you will have seriously distorted sound.
5 responses Add your response
If you are asking about the "pre pre" phono stages, (which are exclusivly for amplifiying a phono cartridge signal to be stronge enough to be used by a Line Level preamp) no you cannot, for the reasons mentioned above.
But if you are writing about using a full preamp that includes a phono stage, yes you can.
I just want it to be clear that many, many preamps that include a phono stage will work fine with any other equipment too. The preamps with a phono stage also handle 'line level' inputs such as a CD player.