Focusrite ISA428 Four Classic Microphone Pre-Amps and A/D Conversion Four ISA-series transformer-based pre-amps, include superb common-mode rejection, excellent overload margin, extremely low noise floor and superwide bandwidth Dedicated analogue insert points featured on every channel allowing routing to additional external processing Accurate moving coil peak meters catch even the fastest and most elusive of transients Four front panel instrument inputs, no separate DI box required Four additional A-D converter inputs combine with the four pre-amp inputs to provide eight line inputs, routable discretely to the eight-channel A-D converter option. Include superb common-mode rejection, excellent overload margin, extremely low noise floor and superwide bandwidth Dedicated analogue insert points featured on every channel allowing routing to additional external processing Accurate 'moving coil' peak meters catch even the fastest and most elusive of transients Four front panel instrument inputs, no separate DI box required Four additional A-D converter inputs combine with the four pre-amp inputs to provide eight line inputs Accurate moving coil peak meters catch even the fastest and most elusive of transients