Pues depende. En el ordenador tengo montado un 5.1 apañadillo sobre todo para escuchar las mezclas y que estén donde deben. Luego, si me pongo los auriculares (que es la mejor forma de notar detalles), tengo los míticos AKG K-141 Studio (toda una referencia).

En el salón un Pioneer VSX-300 y cajas Monitor Audio.

Para tí posiblemente sea todo una chusta tremenda, pero verás, ¿te digo un secreto?. El tema no está en que tengas un ampli de 30.000 pavos y cajas de a 20.000 la pieza, sino en el oído y su educación :-). Eso y luego la analítica de las formas de onda, que ahí, por mucho ampli y por mucho altavoz, eso amigo no falla. Son números fríos y ahí no hay margen de error.

By the Way, In English:

I think you think it sounds better specifically because of your "55 year old years battered by concert" ears. DTS is usually louder (louder does not mean better nor more fidelity), it just means louder. However, it is, literally, human nature for louder things to appear better to the human brain. You can hear it more easily and you think it is better. There are numerous papers on this and lots of studies that directly lead to the the 1970s and 1980s advertisement VOLUME HIKE in ads between shows. Louder means you're more likely to listen to it, hear it, like it.

With that said, in double blind testing, 5.1 AC3 at 640kbps (not the standard DVD 448 but the full 640) has had the same results as somewhere in the ~200kbps mp3s as compared to compressed lossless and uncompressed lcpm audio. THE HUMAN EAR CAN'T TELL THE DIFFERENCE when properly adjusted for volume and encoded from the same source.

That doesn't mean there aren't a few rare people who really can tell the difference, there might be, but we're talking a really small percentage of people. The human ear range is pretty tight, there are certainly people who can hear better than others but it's not orders of magnitude, there are no "magical" ears, the ears can only hear so much.

Also, that doesn't mean you can get around your brain either. For example in your case you now think that AC3 sucks and DTS is better or the best. I doubt there is anything that is going to let you (your brain) have an objective opinion about this anymore except for possibly doing a proper double blind audio test.

However, even if proven wrong, many pyschological studies have shown that you will then be MORE LIKELY to believe the bias because you were proven wrong.

And in the end no matter what if given the choice you're gonna pick DTS over AC3, it's just how the brain works. Unless you can really stay unbiased and objective, which is very hard for humans to truly do, but can be done with training.
Fuck Yeah!