I haven't had a chance to check it out on my home rig yet to verify but everything on the box says 5.1 only. I played the menu on my work PC and it also claims 5.1. Anchor Bay always advertises ES soundtracks when they use them. I thought the pre-release info claimed this was DD5.1EX & DTS ES Discrete. Hopefully, the box set will be, but I doubt it. Doug BTW, the transfer is jaw dropping. Nice job Anchor Bay!