Correct Connnection of Pre Amp/DAC to Amp
I apologise for repeating this post but I am not sure I posted in the correct place first time around (Computer based audio)
I do hope that some kind soul will put me right as I am confused.
I want to connect a Peachtree Decco 2 (basically the same as the iDecco but without the ipod dock) to a Cambridge Audio Azur 640A mark 2 Amp in order to use the Decco as a pre amp and DAC to feed the Cambridge. The Decco Amp is 40 watts per channel whereas the Cambridge is 75 watts per channel.
So my first question is will the Decco act as a preamp for the Cambridge given that the Decco does have a pre amp circuit? If so do I simply connect the Pre Out of the Decco to the Aux In of the Cambridge? I tried this and it resulted in a variable output form the Decco with the volume knob fully functional, which leads on to my next question - Where should I put that knob , quarter volume, half, three quarters or full?
On the other hand there is a Line (fixed) Output from the Decco so would it be better to use this?
What are the benefits and disadvantages of the two different outputs, Pre Out and Line Out ? And is the Aux In of the Cambridge the correct connection to use?
Thank you in advance.