the Haze stack with a separate head and cab uses 6V6's but the Haze combo uses EL34's.I saw a video review of the thing, and while I'd obviously caution taking any demonstration like that with a grain of salt, it was certainly an interesting looking amp. On paper, I like the idea of a low-wattage all tube Marshall. Also, it runs what, 6V6 tubes? Kind of a rarity in the eve-sort-of-high-gain world, making it an unusual amp. I'd love to spend some playtime with one, and I'm not even really a Marshall guy.