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Focusrite ISA828

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Focusrite ISA828 8-Channel mic preamps provide eight original ISA transformer-based pre amps in a single robust 2U chassis.

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Eight classic microphone pre-amplifiers and class-leading A-D conversion

The Focusrite 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 HD™ system and provides clear and accurate input metering, independent of the DAW.
Features

  • Eight ISA series transformer-based pre amps
    In a single robust 2U chassis, offering the classic Focusrite pre at its lowest cost-per-channel to date.
  • New Optional Eight Channel 192kHz ADC
    Embodies cutting-edge conversion technology, incorporating Focusrite analogue circuitry to deliver the best A/D performance on the market, bar none
  • Convenient 25 pin D-Type connectors 
    The ISA828 integrates quickly and seamlessly with ProTools HD, as well as other popular hard disk recorders and mixing desks.
  • Switchable Impedance
    Selectable per channel; choose one of four carefully selected input impedances, including the original ISA110 setting, to suit any microphone.
  • Direct Instrument inputs 
    Each instrument input features high and low impedance options to provide a comprehensive and accessible DI solution.
  • Inserting available on every channel
    Allows external devices to be inserted between the pre amp and the ADC, using the 25-pin D-type cable.
  • High pass filter, Phase reverse and Phantom power 
    Each has a dedicated switch, independent on each channel.
  • Six LED input meter
    Complete with precise meter trim - Designed to utilise the same reference points as Digidesign’s HD™

 

For more info, visit the Focusrite website: ISA828

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