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Focusrite unveils 8-channel microphone preamp with DA converter

Focusrite has unveiled its ISA 828 eight channel microphone pre-amplifier. Shipping in August 2007, the ISA 828 features eight original ISA transformer-based pre amps in a single robust 2U chassis. The eight ISA-series transformer-based microphone pre amps feature the same vintage microphone pre-amplifier design as the original ISA 110 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. 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 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 as well as vintage design high-pass filters.
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, achieving noise at -122dBF and jitter < 250 picoseconds.
Every channel features a six LED input meter, complete with precise meter trim. The meter displays and meter trim calibrations utilize the same reference points as Digidesign’s HD system and provide clear and accurate input metering.
Focusrite ships ISA 828 mic preamp with AD conversion
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