Focusrite ISA428 MkII 4 Channel Mic PreampThe ISA428 MkII provides four of Focusrite's prestigious transformer based microphone preamps. It features the same classic circuitry and renowned audio quality found in the original at a new level of affordability. With selectable input impedance, direct instrument inputs and an optional eight channels of high quality analogue to digital conversion, the ISA428 MkII creates the perfect front end for the discerning recording professional. First