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Four classic preamps with DI inputs

  • Focusrite ISA428 MkII 4 Channel Mic Preamp Rear
  • Focusrite ISA428 MkII 4 Channel Mic Preamp Angle


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  • 1 year warranty
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Quick Overview

4 channel mic preamp from Focusrite, the ISA428 MkII features selectable input impedance, direct instrument inputs and optional eight channels.

  • Description
  • Additional Information

Focusrite ISA428 MkII 4 Channel Mic Preamp Product Description

The ISA428 MkII provides four of Focusrite’s prestigious transformer-based mic preamps. It features the same classic circuitry and renowned audio quality found in the original, at a new level of affordability. With selectable input impedance, direct instrument inputs and an optional eight channels of high-quality analogue to digital conversion, the ISA428 MkII creates the perfect front end for the discerning recording professional.

The acclaimed optional ISA828 eight-channel A-D converter is also compatible with the ISA428 MkII. High-quality converter chips seated within Focusrite custom analogue circuitry deliver unparalleled A-D performance, including a dynamic range of 122dB and jitter performance below 250 picoseconds.

This Focusrite ISA428 MkII also features:

  • Four ISA series transformer-based preamps
  • Eight-channel optional A-D converter
  • Selectable impedance
  • Four front panel instrument inputs
  • Dedicated analogue insert points
  • Variable high pass Focusrite filter
  • Accurate LED meters on every channel catch even the fastest transients
  • Phantom power available on every channel
  • Trim control allows 20dB of extra gain with fine adjustment
  • Phase reverse buttons help to correct phase issues with microphones or cables
  • Optional A-D converters easily synchronise to external word clock

Focusrite ISA428 MkII 4 Channel Mic Preamp Additional Information

Brand Focusrite
Condition New
Rackmountable Yes
Colour Blue
EAN 0815301005124