Tbh, whatever is available it's via olx if I remember correctly AZ was the last series by Sony (I may be wrong but there is no way to ascertain) it had a new s series amplifier and a persistent issue of it taking longer to sense the cdsMy suggestion is just get the AZ2D and be done. That USB port functionality is kind of pointless now because I doubt you will connect a pen drive and play lower quality MP3 files anymore. I think your primary goal was to establish a platform on which you could play your old collection of ACDs and getting another AZ2D will do that. Furthermore it also ticks the nostalgia box!
Did you search for any other music system besides the AZ2D/ 3D? Also, do make sure the CD mechanism works 100% in the unit you will buy.
There are utterly few fully functional ones out there this one is from a household and acc to them they have the remote and all functions working well...
I ll be going myself this weekend to meet them and check everything, will carry all kinds of cds except the RW ones to check the functioning...
The only hitch is it's pretty big in terms of height and adjusting it in the existing furniture setip would be a big challenge.
As soon as I had seen that Jvc mini monster
That belongs to @greenhorn I was so impressed by its size and no nonsense design..
But searching, zeroing on an utterly compact one and then meeting people & all would make the process too slow too time consuming..
Still let's see how this shapes up