I'm quite a fan of Hot Tuna and like this album very much, even though it's not my favorite. Because guitarist Jorma Kaukonen and bassist Jack Casady were the instrumental heart of Jefferson Airplane, I couldn't resist buying all their albums as they were released -- at least up through America's Choice.
I rummaged around and found my old LP along with an early CD issue just to compare the sound. The somewhat lower vocals on the first couple of tracks is pretty close to the original stereo release. The Quad has fairly loud sound coming from the surrounds which I think slightly buries the vocals.
The instruments are clear and the mix is pleasantly aggressive. Papa John Creach's violin is sometimes in the back left and other times to the front; same with the guitars and drums which swap places with different speakers from one track to another. Not a lot of wild panning, but it's a great 70s style surround that's unafraid to experiment with sound placement.
I'd always wondered why the album was titled Burgers. I don't know if Jorma's notes were written specifically for the Rhino Quadio, but he explained that the band planned on releasing another two albums titled Shakes and Fries, an idea that was later abandoned.
My rating is 9. Hope Rhino keeps the Hot Tuna quads coming...