Hi guys, I'm new to the forums but have been reading a lot of the posts and reviews before posting my question.  So I have some limitations that absolutely can not be compromised, they are the following.   NO computer interface ports (com/usb/firewire)   I'm looking to get the best sound...

Stupid question... If I have a portable CD player with optical line out, and I run it into a DAC without any preamp/gain ability or into a headphone amp, how do I control volume?  Or is there basically no way of doing this?   2nd part of the question, is it better to control the volume...