how do you know if you need a dac ?


have always been into vinyl and recently decided to get out of it and bought a Ayre CX-7 cd player.    while it sounds just fine, I read in the forums about members getting dacs.         

how do you know if you need one or not ?

what benefit would one add if any ?
toyo18
Does your Ayre CX-7 have a digital input? In a lot of cases people get DACs to stream music online. If your happy with the CX-7 no need for a DAC  and if it has a digital input you're fairly future proof.
Why would you get out of vinyl?  I can't imagine going digital has been a sonic improvement. 
@jond 

only see a digital out ( xlr )

@soix 

just couldnt find the right cartridge with the arm I had  and wasnt sure what arm would be the " correct one " .....and just dealing with the imperfections of the albums, cleaning , etc....was just getting to much.
The Ayre CX-7 has also 2 xlr and unbalanced analog outputs,You should try them and see if the sound is better than the digital xlr you should use it instead. usually in this level CD players have very good build in dac I am not sure you need standalone dac for your system.
OP- I got out of vinyl for the same reasons years ago. No regrets. Happy listening!

Tom