The ISA 430 MKII represents the pinnacle of
Focusrite’s analogue channel strip technology, bringing together all
the classic designs in one comprehensive production tool. Augmented
with additional features and flavors, alongside unmatched internal
routing and connectivity, the ISA 430 MKII enables today’s recording
professional to enjoy the unique sonic contribution of these heritage
designs within one extremely versatile processor. Focusrite’s iconic
status as the leading manufacturer of channel strips remains
unrivalled.
Features
- 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
Specifications
-
Line
- Gain Range: +10dB to +40dB continuously variable
- Input Impedance: >1MO
-
Mic
- Gain Range: 0 to +60dB in 10dB steps
- Input Impedance: Variable as follows: 600O, 1400O, 2400O, 6800O
- EIN: -128dB with 150O terminating impedance at 60dB of gain
- Noise: -97dBu
- THD: 0.001% with -20dBu 1kHz input and 20Hz–22kHz bandpass filter
-
Compressor (VCA mode)
- Threshold Range: -28dB to +12dB
- Ratio: 1.5:1 to 10:1
- Slope: Soft knee
- Attack: 100µS to 100mS
- Release: 100mS to 7S, variable or auto (program dependent)
-
Compressor (Vintage Opto mode)
- Threshold Range: -28dB to +12dB
- Ratio: 1.5:1 to 5:1 in Comp mode
- 5:1 to 20:1 in Lim mode
- Slope: Soft knee in Comp mode,
- Hard knee in Lim mode
- Attack: Fixed
- Release: Fixed
-
Gate
- Threshold Range: -40dB to +10dB
- Gate Range: 0 to -80dB
- Attack: switched fast or slow
- Release: 100mS to 5S
- Hold: 20mS to 4S
- Expander Ratio: 0 to 5:1
-
De-Esser
- Threshold Range: 22dB
- Frequency Range: 2K2 to 9K2
- Ratio at centre frequency: 2:1
-
Limiter
- Threshold Range: 20dBu
- Ratio: infinite (Brick Wall)
- Attack: Frequency dependent
