Insync vs. Mysteron was the production trio that spawned several now classic techno releases on their own [l5449] label during the 1990s.

Consisting of Lee Purkis (In Sync) along with Chris Hartley and David Manuel (Mysteron), the tracks released under the Insync vs. Mysteron moniker were variably produced according to the input of one, two or all three of the trio.

Aside from those releases correctly credited to known aliases, they were also involved in music that made it onto releases on Fragmented Records (FMD LP 001 & FMD CD 001), Relief Records (RR760), Basement 282 (PT17), Target Records (US) (TR-001) and Peacefrog Records (PFG 058, PFG 059/PFG 059 CD), although in some cases they were never given any credit for these works.

The collaboration has been defunct since the late 1990s.