Focusrite ISA-828 - Microphone Preamp8 ISA Transformer-Based Preamps4 DI Inputs8 Line InputsVariable ImpedanceOverviewThe ISA-828 from Focusrite is an eight-channel microphone preamp, featuring original ISA transformer-based preamps with the signature high-end Focusrite sound.
The microphone input stage provides a variable impedance circuit comprising four input impedance settings. Maximum gain is a very healthy 80dB, for use with low output dynamic and ribbon microphones.
Channels one through four include DI inputs that feature high and low impedance options, delivering a comprehensive and accessible DI solution. An eight-channel optional analog to digital converter card makes the ISA-828 the perfect front-end for a DAW.
FeaturesEight channel microphone preamp featuring original ISA transformer-based preampsEach channel can accept either microphone or line inputChannels 1 - 4 also accept instrument inputs for guitars and basses, or vintage synthesizers with high impedance outputsMicrophone input can deliver up to 80dB of gain, particularly useful when working with very low output dynamic and ribbon microphonesPhantom power and phase switches provided on each inputHigh-pass filter on each channel provides a 75Hz knee frequency with 18dB/octave roll-offVariable microphone impedance with four settings of 600, 1.4k, 24k and 6.8kΩSix-LED input meter per channelOptional eight-channel 192kHz analog-to-digital converter card provides eight channels A/D conversion, delivering a dynamic range of 122dB and jitter at <250 picosecondsIn the BoxFocusrite ISA-828 - Microphone PreampAC Power Cable
Preamp Type Solid StateNumber of Channels 8Frequency Response 10Hz-110kHzPhantom Power YesAnalog Inputs 8 x XLR (Mic), 8 x 1/4" (Line), 4 x 1/4" (Hi-Z), 1 x DB25 (ADC Inputs)Analog Outputs 1 x DB25 (CH 1-8)Digital Outputs Optional A/D expansion card available (digital DB25, optical)Clock I/O 2 x Word ClockRack Spaces 2UHeight 3.5"Depth 12" (13.8" W/Heat Sink)Width 19"
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