Focusrite ISA-430 MKII - Producer Pack Signal ProcessorThe most versatile channel strip: transformer-based mic pre, versatile EQ with two dual-range parametrics, compressor with both VCA and vintage optical circuitry, expander/gate, phase-cancellation de-esser, and optional 192kHz/24-bit 2-channel AD conversionFour units in one, independently accessible: use the mic pre, EQ, Dynamics, and A-D converter independently or simultaneouslyPowerful processing options: HPF, LPF, and EQ in addition to dynamics sectionControl Over Dynamics: compressor, expander/gate, and de-esserLundahl LL1538 Input transformer: the very best input transformer availableBacklit VU Meter with Variable Calibration: moving coil VU meter with variable calibration to suit analog and digital recording mediaOverviewThe Focusrite Heritage Sound--In a Complete Channel StripISA 430 MkII is part of Focusrite's classic lineage of no-compromise microphone preamps. The original ISA modules, commissioned by Sir George Martin, are time-honored and coveted by engineers the world over. Literally hundreds of hit recordings have been made with Focusrite's ISA range--a legacy that continues today.
The ISA 430 Mk II is the most sophisticated ISA in the range: a complete channel strip. Every element can be used independently or patched in virtually any order--including a classic mic pre, versatile EQ, VCA/optical compressor, expander/gate and de-esser.
The Most Versatile Channel StripThe ISA 430 MkII features Focusrite's ultimate heritage sonic signature including transformer-based mic pre, versatile EQ with two dual-range parametrics, compressor with both transparent VCA and vintage optical circuitry, expander/gate, phase-cancellation de-esser and optional 192kHz/24-bit 2-channel AD conversion.
Full Control Over DynamicsThe mic pre suits almost all mics including vintage and 'difficult' models such as ribbons. Variable impedance can be set for transparency or to highlight special features of the mic, such as presence bumps and rolloffs. Switchable additional inductance adds "air" without EQ.
Four Units in One, Independently AccessibleUse the mic pre, EQ, Dynamics and A-D converter independently, or route them to build powerful simultaneous processors. Re-order different sections to create multiple alternative signal paths.
Powerful Processing OptionsInsert HPF, LPF and EQ into the Dynamics sections for frequency-sensitive processing--Listen function lets you audition the side-chain to fine-tune the effect.
Control Over DynamicsExpander/gate features "hysteresis" setting to avoid chattering on difficult signals. De-esser is based on phase cancellation at the chosen frequency, for more natural sound.
Lundahl LL1538 Input TransformerThe original mic transformers used in the original Red modules help to provide the unique sound and performance of this groundbreaking design.
Backlit VU Meter With Variable CalibrationISA 430MkII has a moving coil VU meter with variable calibration to suit analogue and digital recording media, alongside two six-LED peak meters; inputs can be metered either pre- or post-insert.FeaturesClassic Focusrite transformer-based Mic-pre with variable impedance and "Air" featureMulti format compressor that switch between Focusrite's transparent VCA circuit and a vintage optical circuitUnmatched flexibility with an incredible variety of insert points and variable signal path arrangementsAbility to function as three separate modular processors - microphone preamp, EQ and dynamicsPrecision VU metering of input level, insert 1 or 2 return level, compressor gain reduction or sidechain listen level (switched)Classic Focusrite EQ design based around an expanded version of the original ISA 110Post microphone preamp output for the shortest possible signal path"Listen" feature for precise control over compression, gating, expansion and de-essingDe-esser design based on optical technology for lower distortion and transparencyIn the BoxFocusrite ISA-430 MKII - Producer Pack Signal ProcessorAC Power Cable
Focusrite ISA 430 MkII Specifications:
Line:Gain Range: +10 to +40dB continuously variableInput Impedance: >1M ohmMic:Gain Range: 0 to +60dB in 10dB stepsInput Impedance: Variable as follows: 600 ohms, 1.4 kOhm, 2.4 kOhm, 6.8 kOhmEIN: -128dB with 150 ohm terminating impedance at 60dB of gainNoise: -97dBuTHD: 0.001% with -20dBu 1 kHz input and 20Hz-22kHz bandpass filterCompressor (VCA mode):Threshold Range: -28dB to +12dBRatio: 1.5:1 to 10:1Slope: Soft kneeAttack: 100µs to 100msRelease: 100ms to 7s, variable or auto (program dependent)Compressor (Vintage Opto mode):Threshold Range: -28dB to +12dBRatio: 1.5:1 to 5:1 in Comp mode, 5:1 to 20:1 in Lim modeSlope: Soft knee in Comp mode, Hard knee in Lim modeAttack: FixedRelease: FixedEQ:Low Pass Filter: 18dB/oct from 400 Hz - 22 kHzHigh Pass Filter: 18dB/oct from 20 Hz - 1.6 kHzParametric section is comprised of: Low-mid & Hi-mid parametric, each with continuously variable boost/cut with center detent, frequency sweep control with two ranges, and fully variable Q. Low-mid frequencies 40 Hz to 400 Hz (120 Hz to 1.2 kHz when x3 is pressed). Hi-mid frequencies 600Hz to 6kHz (1.8 kHz to 18 kHz when x3 is pressed)Shelving section is comprised of: High Frequency Shelf: The frequency range steps are 1.5 kHz, 3.3 kHz, 6.8 kHz and 15 kHz (2.2 kHz, 4.7 kHz, 10 kHz and 18 kHz when Hi Range is engaged). Low Frequency Shelf: The frequency range steps are 20 Hz, 56 Hz, 160 Hz and 460 Hz (33 Hz, 95 Hz, 270 Hz and 655 Hz when Hi Range switch is engaged) Gate:Threshold Range: -40dB to +10dBGate Range: 0 to -80dBAttack: switched fast or slowRelease: 100ms to 5sHold: 20ms to 4sExpander Ratio: 0 to 5:1De-Esser:Threshold Range: 22dBFrequency Range: 2 kHz - 9 kHzRatio at Center Frequency: 2:1Limiter:Threshold Range: 20dBuRatio: infinite (Brick Wall)Attack: Frequency DependentWeight: 16.7 lbsDimensions (W x H x D): 19" x 3.5" x 9.8"
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