Sound: English (only) DTS HD
Subtitles available in english (only).
Disc Format: 6xBD50 6xBD25
Special Features come in standard definition (mostly 480p), 16:9 and english (only) stereo, as well as the english (only) subtitles.
Is completely delightful to have this collection in this ultimate format, as the experience becomes complete. Image (1080i, not p) and clear sound (superb DTS HD) makes this item a must-have for any Torchwood fan, owner of a proper Blu Ray player and a good music equipment.
Even if you're not a fan, stories of Torchwood are human and emotional, and the actors (both regulars and guest stars) make all the scripts becoming a true, living reality for the audience. Some of them, even that they come in the "envelope" of sci-fi, deal with such classic issues as human fears, family, trust, love... that won't leave you indifferent, and you will probably cry, laugh and feel as you keep watching.
Don't be wrong: this is an adult-oriented series, with some violence, sex and not-kind-words, and yet, those are not values that are the main essence of the show, but those I explained above.
The first "but" I could say about it is that sometimes you see the interlaced image coming from the sides of the screen (this was watched in a SONY KDL 40X-3500, updated to last firmware available), and depends how much "sensible" you are for those kind of things... sometimes is annoying.
The second "but" would be the packaging in which collection is presented. In my opinion, I would change the cardboard for something a bit less flexible and not suitable to be destroyed so much fast. But anyway, this is also a minor "but", since this packaging makes the price affordable.
Anyway, get this experience, own it and enjoy it.