Focusrite ISA828 delivers multi-channel ISA premium grade microphone preamps for professional multi-tracking and recording. Ever dreamt of owning a Focusrite ISA 828 8-Channel preamp, but wondered how they fared in professional studios? Focusrite ISA 828 features eight original ISA transformer-based microphone pre-amplifiers in a single robust 2U chassis, offering the Focusrite signature sound at its lowest cost per channel to date.