Mine also has the DTS @ -30dB issue(in all of the players, Sony, Oppo, Samsung)
Unfortunately, since I bought this a year before I got my Quad setup and only had listened to it in Stereo, I do NOT have the receipt anymore , so the folks at Corte Inglés are not gonna be takin' it back...
Funny that someone who has always been that much into the cutting edge of technology released a flawed product..that's what happens when you don't check the release before giving the pressing plant the go ahead....

Although...they mention in an amazon review that it's an issue with the new(??) receivers...