It's the 1999 Greatest Hits version.
I was expecting a nice sound, but I don't think I've set my expectations too high, it just doesn't sounds very good at all when it's turned up a bit, I'll need to check the level, but I'm pretty sure it was well under 12 o'clock on the volume dial.
These are both used units, so I guess I could use a coax cable instead of the analogue to rule out an issue with the DAC in the CD player, just trying to exhaust all possibilities before I conclude that the amp is not very good with my speakers.
Edit: I think you meant was the amp a 2014 model and not the John Williams cd!