Does Anyone Use a Portable CD Player as Their Source?

Just curious to know if anyone has tried using a portable CD player running off AA batteries as their source? I’m doing this right now along with a remote controlled stepped attenuator preamp going into a 400 W/ch amp and I’ve got to say I’m pretty blown away by how natural everything is sounding. Listening fatigue is virtually non-existent, instruments and voices sound natural, and piano notes don’t jump around the room. Obviously it has some weaknesses as you can only expect so much out of a cheap consumer device that wasn’t designed specifically for audiophiles, but it’s impressive nonetheless. 
I think it really boils down to it’s simplistic circuitry and having everything on a single board. For example, there is no:
-grid connection
-transformer
-AC-DC power supply
-power cables
-electrical system noise 
-Etc.

If you haven’t tried this, I encourage you to give it a shot and see what you hear. It has been a fun experience for me.