Matthew Dear is best known for his morose, song-oriented tech-house output. But as Audion, Dear produces techno that's jacked up on amyl nitrite and Viagra (sample track titles: "Titty Fuck," "Just Fucking") and imbued with the springiness of Olympic high jumpers' quadriceps. For this tour (dubbed "Hecatomb"), three screens will flash op-art spirals and Möbius strips that pulsate and writhe in time with Audion's throbbing, thrusting techno. It's the closest this upscale dinner theater will ever get to a rave. (Triple Door, 216 Union St, 838-4333. 10 pm, $15 adv/$18 DOS, 21+.)