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Focusrite -  ISA828 8-Channel Mic-Pre
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    Focusrite - ISA828 8-Channel Mic-Pre

    Manufacturer: Focusrite USA

    Item #: ISA828   •   MFG #: ISA828




    Eight classic microphone pre-amplifiers and class-leading A-D conversion. The ISA828 eight channel microphone pre-amplifier provides eight original ISA transformer-based pre amps in a single robust 2U chassis, offering the Focusrite signature sound at its lowest cost per channel to date.

    The eight ISA-series transformer-based microphone pre amps feature the same classic 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, eight line outputs and an optional eight channel 192kHz ADC boasting the widest dynamic range of any converter to date. 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 disc recorders and mixing desks.

    The microphone input stage additionally includes a variable impedance circuit, allowing the user to switch between four carefully selected input impedance settings. The original ISA110 setting is supplemented by three further impedance settings to either perfectly match the pre-amp with any microphone, thus maximizing level, or to use different settings creatively to shape the sound of the microphone being used.

    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 75 Hz / 18dB per octave high pass filters are also provided on every channel, ensuring unwanted low frequencies are effectively eliminated.

    The ISA828's new optional eight-channel 192kHz ADC is the first audio ADC to utilise Texas Instruments Burr-Brown Pro Audio Amplifiers and Flagship Analog to Digital Converter PCM4220 chips. This cutting-edge technology is encompassed within Focusrite's own custom analogue circuitry to provide eight channels of unparalleled A/D conversion, delivering a dynamic range of 122dB and jitter at less than 250 picoseconds.

    Finally, every channel features a six LED input meter, complete with global precise meter trim. Metering has been designed to utilise the same reference points as Digidesign's Pro Tools HDT system and provides clear and accurate input metering, independent of the DAW.

    • Features

      • Eight original ISA series transformer-based pre amps in a single robust 2U chassis
      • Selectable impedence per channel; choose one of four carefully selected input impedances, including the original ISA 110 setting, to suit any microphone.
      • Direct Instrument inputs on the front panel including high and low impedance options to provide a comprehensive and accessible DI solution.
      • High pass filter, Phase reverse and Phantom power per channel
      • Convenient 25 pin D-Type connectors for quickand seemless integration with Pro Tools
      • Insert points on every channel
      • New Optional Eight Channel 192kHz ADC.
      • Focusrite analogue circuitry to deliver thebest A/D performance on the market (-122dB A-weighted).

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