Îòâåò: x64 driver (Vista x64 and Windows XP x64) - ALPHA - 3546 Is this a 64-bit version of GuitarRig? Note that the 64-bit version kX supports only 64-bit ASIO hence requiring the ASIO client to use 64-bit ASIO interface. p.s. mm, according to NI site, it looks like there's no 64bit version of the GR. i.e. you won't be able to use GR with the kX ASIO in 64-bit OS. - i.e. use asio4all.