If you've been immersed in the American techno underground since 2000, you've probably encountered the work of Geoff White and Lusine. (If you haven't, now's the time to get right. They perform together Sat April 30 at Mantra Lounge, 210 S Washington St.) These prolific producers have been making deep impressions here and abroad with their minimalist, mercurial output on some of the planet's most unimpeachable labels. (Both now release on Michigan imprint Ghostly International and its Spectral Sound subsidiary.)

Geoff White (AKA Aeroc and Jackstone), who moved from Ohio to Spain, possesses a gift for hypnotic rhythms and elegantly subdued melodies. His tracks hold their own with the Bay Area's glitchmeisters and Germany's coolly efficient tech-house elite. White's best album under his own name, Nevertheless (originally slated for release on Kit Clayton's Cytrax imprint in 2003), remains trapped in distribution limbo. Further, White's superb Questions and Comments and Discord (recorded with Stewart Walker) came out on the now-defunct Force Inc. and may be hard to find. White's many 12s will require strenuous digging, too, as they're limited editions on small Euro labels.

However, you can easily locate his Aeroc full-length, Viscous Solids (Ghostly), on which White threads pastoral guitar spangulations within meticulous, downtempo beat programming and arctic ambience. Viscous Solids interestingly morphs from Greg Davis-like folktronica to Plutonian drones to otherworldly microfunk to sluggish clip hop.

White's new Etsche EP (Spectral) is another departure. The title track offers uptempo tribal techno with syncopated 4/4s wreathed by ectoplasmic wisps of guitar. "Guitarjacked" kicks ass with a looped acoustic-guitar ker-ching fueling a shuffle-techno burner. Etsche bodes well for White's continued presence in the most discerning DJs' sets.

A master of understatement, Lusine (Seattle's Jeff McIlwain) is an electronic-music Zelig. While DJs like Sven Vath cane his tracks, Lusine keeps an unassuming profile, spending most of his time in the lab devising fascinating variations on myriad styles. While all of Lusine's work is recommended, 2004's Serial Hodgepodge (Ghostly) may be the best place for novices to dig in. This album displays his diverse range and luxurious production techniques. Lusine proves himself equally adept at glitch-hop, ambient, and tech-house, and he possesses a deceptively potent supply of funk in his trunk.

The forthcoming Inside/Out EP (Ghostly) finds Lusine burnishing his rarefied melodic and textural gifts. These four tracks are as intricately designed as a computer's motherboard and will make your brain cells shimmy as much as they'll cause your hips to undulate. Inside/Out is the polar opposite of LCD dance music.

segal@thestranger.com