Put this one on today after not having listened for years. The live tracks are mixed like most live albums, with not much in the rears other than audience and ambience. There is the occasional exception. A guitar attack during "Sun Goddess" comes blaring out of the rear right and it'll make you jump. My first inclination after a couple of minutes was to skip the live tracks and just jump ahead to the studio ones, but man, these guys kicked some serious butt in concert. High energy and incredibly tight. Despite the lack of an imaginative surround mix, the performances are amazing. The mixes on the studio tracks however are top notch, demo material. I like them even better than the 70's quad mixes (and I love those!) It's unfortunate that when Sony was mixing titles into 5.1 for their SACD series, they chose live albums for EWF. If All 'n All could have been mixed like the studio tracks here, it could have been one of the best surround discs ever. I live in hope....
Worth seeking out if you can find one at a reasonable price.
I'll shave off a point because of the mix on the live tracks. A very enthusiastic 9.