Focusrite ISA430 Mk II Producer Pack Channel Strip

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1,934.00 RRP 1,935.00 (including VAT @ 23%)

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Estimated delivery to you: 2nd November 2016
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30 day money back guarantee included

30 day money back guarantee included

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Product Ref: 47577

  • ISA Classic Transformer-Based Preamp
  • Instrument, Line and Mic Inputs
  • Multi-Format Compression
  • Advanced EQ
  • Gate and De-Esser

Focusrite ISA430 Mk II Producer Pack Channel Strip

The Focusrite ISA430 MkII is an incredible multi-functional channel strip that incorporates a range of professional quality features such as the iconic Focusrite ISA transformer based high clarity microphone pre-amp, advanced EQ for optimized frequency manipulation, dual mode compressor, gate and de-esser. Also including an instrument, line and jack input and whether using the versatile pre-amp, compressor, gate and gate separately or in unison the ISA430 MkII can exceed your expectations catering to a range of professional studio applications.

Product Ref: 47577

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Full Description

View Full Description

Focusrite ISA Microphone Pre-Amp

The ISA microphone preamp was first introduced in 1985 and is renowned for outstanding transparency and subtle warmth contributed by transformer core saturation. With an additional variable impedance circuit ISA users are able to perfectly match the preamp with any microphone, or to use different settings creatively to shape the sound of the microphone. The ISA microphone preamp topology provides amazing clarity and the well-known Focusrite sound making it the first choice for many audio professionals today.

Dual Mode Compressor

The Focusrite ISA430 MkII incorporates an impressive dual mode compressor which gives you the ability to use either a transparent VCA circuit for large amounts of compression or a vintage optical design compression which provides a more traditional compressor tone. Complete with ratio, threshold, makeup gain, attack, mix, release (with auto release function) and blend switch the ISA430 provides a huge range of control allowing you to accurately add and tweak your compression to create truly punchy and dynamically consistent tones.


Providing an advanced and high performance EQ section the ISA430 delivers maximum control over the frequency bandwidth with high and low pass filters, twin parametric EQ controls with x3 buttons for further manipulation possibilities and even the capability to switch sections of the EQ into the dynamics side chain which can be referenced with the listen button to allow precision EQ modifications.

Mic Pre Masters

Focusrite are world renowned for the premium design and build quality of their microphone preamps, offering professional results for home and commercial recording. The Mic Pre Masters website provides video demonstrations and interactive audio stems which allow you to hear isolated tracks from recordings done exclusively through Focusrite preamps. The interactive demonstrations allow you to hear exactly how each preamp from the Focusrite range treats individual instrument elements to ensure you purchase the perfect interface for your desired application.

Mic Pre Masters Stems:


  • Classic Focusrite transformer-based Mic-pre with variable impedance and Air feature
  • Multi format Compressor; switch between Focusrite's transparent VCA circuit and a vintage optical circuit
  • Unmatched flexibility with an incredible variety of insert points and variable signal path arrangements
  • Ability to function as 4 separate modular processors: mic pre, EQ, Dynamics and stereo ADC
  • Precision VU metering of input level, Insert 1 or 2 Return level, Compressor gain reduction or Sidechain listen level (switched)
  • Classic Focusrite EQ design; an expanded version of the original ISA 110
  • Post mic pre output for the shortest possible signal path
  • Proprietary Focusrite discrete Class A VCA Gate and Expander designs
  • Listen feature for precise control over compression, gating, expansion and de-essing
  • De- esser design based on optical technology for lower distortion and transparency
  • Soft Limiter to avoid critical digital overload
  • Optional Stereo A/D 24-bit 192 kHz Delta Sigma converter



  • Gain Range: +10dB to +40dB
  • Input Impedance: >1M Ohm


  • Gain Range: 0 - 60dB / 10dB Steps
  • Variable Input Impedance: 600 Ohm, 1k4 Ohm, 2k4 Ohm, 6k8 Ohm
  • EIN: -128dB with 150 Ohm Terminating Impedance at 60dB Gain
  • Noise: -97dBu
  • THD: 0.001 with -20dBu 1kHz Input and 20Hz-22kHz Bandpass Filter

Compressor (VCA Mode)

  • Threshold Range: -28dB - +12dB
  • Ratio: 1.5:1 - 10:1
  • Slope: Soft Knee
  • Attack: 100µs - 100ms
  • Release: 100ms - 7s, Variable or Auto (Program Dependent)

Compressor (Vintage Opto Mode)

  • Threshold Range: -28dB - +12dB
  • Comp Ratio: 1.5:1 - 5:1
  • Lim Ratio: 5:1 - 20:1
  • Comp Slope: Soft Knee
  • Lim Slope: Hard Knee
  • Attack: Fixed
  • Release: Fixed


  • Low Pass Filter: 18dB/oct from 400Hz to 22kHz
  • High Pass Filter: 18dB/oct from 20Hz to 1.6Hz
  • Parametric Low Mid: 40Hz - 400Hz (120Hz - 1.2Khz when x3 pressed)
  • Parametric Hi-Mid: 600Hz - 6kHz (1.8kHz - 18kHz when x3 pressed)
  • High Shelf Freq Steps : 1.5kHz, 3.3kHz, 6.8kHz, 15kHz (Hi-range engaged: 2.2kHz, 4.7kHz, 10kHz, 18kHz)
  • Low Shelf Freq Steps : 20Hz, 56Hz, 160Hz, 460Hz (Hi-range engaged: 33Hz, 95Hz, 270Hz, 655kHz)


  • Threshold Range: -40dB to +10dB
  • Gate Range: 0 to -80dB
  • Attack: Switched Fast or Low
  • Release: 100ms to 5s
  • Hold: 20ms to 4s
  • Expander Ratio: 0 to 5:1


  • Threshold Range: 22dB
  • Frequency Range: 2k2 to 9k2
  • Ratio at Central Freq: 2:1


  • Threshold Range: 20dBu
  • Ratio: Infinite (Brick Wall)
  • Attack: Frequency Dependant

Weight & Dimensions:

  • Weight: 7.58Kg
  • Width: 19" / 484mm
  • Height: 3.5" / 85mm
  • Depth: 9.8" / 250mm