Cambridge Audio CD Player Has Died

I have a Cambridge Audio Azur 840C CD player that is roughly 15 years old. A year ago the left channel went dead & was subsequently repaired. However, yesterday the audio output completely died (no sound whatsoever). Although the unit has served me well, I am reluctant to continue to put more money into repairs of an older unit.

That being said, I have a question for those of you who have more expertise than I. Is there a discernible difference in sound quality between high-end CD players & those more moderately priced? Although I do have a high-quality audio system, I would prefer not to spend a lot of money on a new CD player unnecessarily.
Thank you so much.
I have always found a DAC to need break-in even if purchased used   
Congrats on your new purchases!In my limited experience pretty much every new component and cable begins to show it's true colors between 25-50 hours.After that improvements are more subtle.I'm burning in a new dac right now myself.Since everything has tubes I play something on repeat at a very low level for 3-4 hours then sit down and listen for changes for 30minutes or so.At the 50 hour mark I decide if it will stay or go.
Thank you  for the information.
Before getting a Bryston BCD-3, I used a CXC with a BDA-2 DAC. More than satisfied  with the SQ of my classical RedBook CD collection. 

IMO, the CXC output is excellent, and the SQ is determined by the DAC you use. 

Just a thought.
Kitjv, Thanks for the feedback.