Hi audio fellows, I'd like to receive opinions/advices about the following topic.
Much appreciation for any help.

Here's the story;
I'm considering to buy a used DAC to plug to my system. My budget here is around the 350$.
I've been reading different posts on the forum and the picture I got is that a DAC can improve the CD session as well as the mp3.
Some members on older threads about this topic (some are about 6 years old) commented that you don't need an expensive CDP (as some already have a good DAC magic on board), rather invest in a qualitative DAC.
Is this still valid considering the progresses of technology?

I have also some questions regarding the CDP:
- The CA CD6 I own is about 15 years old and at the moment is still doing his job. So no worries right now, but I wonder how long a CDP can perform? Is it wise to invest in a DAC or rather in a modern CD player?
- The CD6 I own is provided with balanced and digital output, should I look for a DAC with balanced output too?

Thank you, cheers.