Great so far
That's my first DAC, but I can tell when the sound quality is nice.

Checked with coax/optical and Bluetooth (LDAC)
The volume via optical is a bit lower than coax.
I tested the usb input with my win11 laptop. I used the issued cable from the box, and the display went to "384" as I plugged it in. No drivers needed.
I set it to 24/96 and played a few flacs of the same quality. Sounded nice. System sounds, Youtube videos were ok.

It's early, but as far as I can taste, the sound is well balanced.
Treble is not sibilant, though my speakers feature titanium domes and can be fatiquing with low quality music.
Bass is there, too.
Sound is overall transparent, without strange colorations.
The remote control is very handy.
I use D-6s as a center of all my digital sources (Bluray, win11 PC), Sony MD Deck, Cellphone)
So the remote acts like a universal volume control of my humble system.
Let's hope D-6s proves reliable...

Service from Audiophonics was great so far. I chose the faster shipping option and the parcel came in 2 days from France to Greece.

Plaisir/Prix imbattable !
d'abord, merci à Audiophonics pour la qualité du service ( conseil, suivi commande, livraison rapide) .
Ensuite, qu'elle différence avec mon ancien DAC ! précision du message, plans sonores et espace qui prend de l'ampleur , voix incarnées ! ....je suis plus que satisfait ! bientôt un nouveau ampli casque ?