USB DAC Dumb

Yes im sure there is , check at Fryes or another electronic parts store, Heck Best Buy might sell a cable or adapter.

Matt

If the CDP has digital out, YES, it might be possible to send signal to your headphone amp/DAC assuming compatibility (with or without an adapter) between the output of your CDP and the input to your DAC.  IF the CDP only has RCAs outputting an analog signal as would go to a pre-amp or amp, then I don't think you will be able to do it.  Got to be able to access the digital stream in the CDP and send that to the DAC.  Or so I think.    

Just to clarify. 
I want to use the DAC in the headphone preamp.
The headphone preamp has a USB input, a pair of RCA inputs and a pair of RCA outputs. 

david - to me there are 2 questions that need to be answered to address your original inquiry about using an older CDP w/the DAC in your HP amp...1) Can your CDP provide a digital signal that the DAC in your headphone amp can process? 2) If the CDP does have a "Digital out", can you find a way to get that signal into the USB port on your HP amp?  If the answer to both of those questions is "Yes", then you should be able to listen to that CDP though your headphones using the DAC in the HP amp.    If either is "No", you might still be able to listen to the CDP via the HP amp using conventional RCA-type interconnects but I suspect this won't take advantage of the DAC in the HP amp.   Hope that makes sense.

Thanks for the reply.
I haven't purchased the CD player yet.
Of course I will buy one with a digital output.
To keep costs down I'm planning on buying a older carousel player.
The DAC in my headphone amp is modern and reportedly very good.
So, how to use the USB to the digital out in the CD player?