This is Dolby Pro Logic!

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

[Recording time]
Color stereo 27 minutes
[Contents list]
Recorded contents : balance check including center speaker / Role of center speaker / Challenge to deep bass! (The limit of bass of your AV equipment!) / Use of super woofer / Optimum position of surround speaker / Confirmation of delay time / Introduction of Dolby Institute (San Francisco) ~ World's best preview room ~ Dr. Dolby appears