I have a Luxman-D06 cd player that I bought new in 2010 (when I also purchased a L-509u + Verity Audio Parsifal Ovation speakers). After 6 or 7 years I used the D-06 as a transport, but as it has only a TOSLINK digital out I eventually replaced it with a Moon 260d transport which has a coaxial out.
So just for fun this morning I put the D-06 in my second system which now consists of the L-509u integrated amp, Joseph Audio Pulsar speakers, and a PS Audio PP12 power regenerator. To my surprise the D-06 sounded not bad at all! In fact with one of the few SACDs that I own - Angella Hewitt playing the Chopin Nocturnes - the music sounded sublime. Another factor may be some high frequency hearing loss in my almost 65 year old ears, but that is another story...
I will have to revisit using the D-06 as a transport using the optical out into my Chord dac. My second system can benefit from upgrades to my main system as I consider a new digital source, but there is clearly some life left in the D-06.
Luxman was onto something in 2010, and I can only imagine how more than a decade later the D-07x and D-10x sound.
I am very happy with the Verity Audio PO speakers and am greatly enjoying the L-595ASE amp in my main system. But there is still one box missing on my main rack...