Advertised as "the best sound format possible", the 7.1 DTS-HD Master Audio at 4468 kbps is an extremely strong mix with excellent range and depth. There are many examples of separations with resounding bass and decent high-dend - it's quite impressive. Phasers, door closings and the quite rumble of the Enterprise engines all sound quite 'modern' and professional now. A two channel mono track is left for the purists and you can easily distinguish the differences in bass response and the higher end. Subtitles are available in English, Spanish, French and Portuguese. The set is 'region free' - playable on Blu-ray machines worldwide. I verified this with my Momitsu - BDP -899.

Extras are extensive - stretching even beyond the featurettes, preview trailers for each episode and 'Animated Series' episode (More Tribbles, More Trials). Disc 4 is solely covering the 'Tribbles' but while this wasn't one of may favorites I have grown to appreciqat it. Fans have more than enough to indulge in and there is BD-LIVE and Mobile Blu functionality.

Season Two includes the classics Amok Time, Mirror, Mirror, The Doomsday Machine, Wolf in the Fold, The Gamesters of Triskelion, Bread and Circuses, and Assignment: Earth. I also admit to a fairly high level of anticipation to watching them again in 1080P especially with the 'new and improved' visual effects showing their HD development. Bastardized? Maybe - but this reviewer enjoyed rehashing the adventures with Roddenberry's wonderfully positive concept of the future leading the premise of each episode. Some fans can't get enough. Trekkies will want to indulge - especially if they were as keen as I was on The First Season on Blu-ray. I've found no flaws in this Season 2 package and it appears to be as competent as the first set in high-definition.  

Hopefully the below captures will give you an idea as to some of the differences.  It is essentially the episode openings (and titles) and space and planet orbiting scenes although there has been a general enhancement from those originally offered as two episodes on single-layered DVD. Purists may consider it blasphemy while others judge them as excellent upgrades. I was intrigued simply as one who enjoyed the original series and any minor (or major) visual alternations became a highly amusing curiosity. The new transfers have less noise and are generally more vibrant - sometimes the colors appearing less realistic. Certainly the older issues were fairly dull in comparison. I wouldn't say detail is extravagantly improved (in some instances lessened) but the original had substantial hairs, dirt, speckles and other worn markers that are obviously removed in this new remastered package.

Audio-wise the older release actually had a 5.1 remix but the remastered is quite a bit more satisfying being that much cleaner and crisper - plus an occasional new effect (if my memory serves correctly). Unfortunately where the older offered optional English subtitles - the newer has only options for French or Spanish.

Extras easily go to the newer release with some of the featurettes duplicated from the 2004 package. I liked the short Nichelle Nichols bit as well as the D.C. Fontana one and Designing the Final Frontier segment. Inclusion of an animated episode (More Tribbles, More Trials) and a Deep Space Nine one is actually unnecessary and smacks of filler. Unfortunately we lose the text commentaries for “Amok Time” and “The Trouble With Tribbles” found on the first package which many fans enjoyed.

I was never a Tribbles fan but admit to really loving some of the episodes of the original Star Trek - I actually hope this makes it to Blu-ray one day - such is my geek-dom.