FOCUSRITE ISA 828 8 CHANNEL MIC PRE The eight ISA-series transformer-based microphone pre amps feature exactly the same vintage microphone pre-amplifier design as the original ISA110 module from Focusrite`s critically acclaimed Forte console (including the original Lundahl L1538 transformer and bespoke zobel network). The pre-amps are complemented by eight line inputs, four instrument inputs and an optional eight channel 192kHz ADC that outperforms every other converter yet devised. Thanks to its convenient 25 pin D-Type connectors, the ISA828 also integrates quickly and seamlessly with ProTools HD, as well as other popular hard disk recorders and mixing desks. The microphone input stage includes a variable impedance circuit, allowing the user to switch between four carefully selected input impedance settings. The original ISA 110 setting is supplemented by three further impedance settings to perfectly match/creatively mismatch the pre amp with any microphone collection. The four front panel instrument inputs also feature high and low impedance options to provide a comprehensive and accessible DI solution. Insert switches are also featured on every channel, should the need arise to place extra processing between the pre amp and converter. Vintage design high-pass filters are also provided on every channel. Focusrite`s optional eight-channel 192kHz ADC embodies cutting-edge conversion technology, seated within Focusrite custom analogue circuitry. This provides eight channels of A/D conversion, delivering unparalleled performance; noise at -122dBF and jitter < 250 picoseconds. Finally, every channel features a six LED input meter, complete with precise meter trim. The meter displays and meter trim calibrations utilise the same reference points as Digidesign`s HD system and provide clear and accurate input metering, independent of the DAW.