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Focusrite's Producer Pack Revison 2!
The ISA 430 MKII represents the represents the ultimate Focusrite's analog 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 ISA 430 MKII:
- Easy visual monitoring with VU and LED meters
- Variable impedance mic preamps for fine-tuning mic input levels
- Flexible signal path provides up to four discrete inputs at once
- Compressor features vintage opto plus Class A design.
- Impeccable EQ drawn from the ISA 110
The ISA 430 MKII Input Section
The input section on the ISA 430 MKII features a large,
professional-grade VU Meter with adjustable calibration, which can be
selected to display any one of a number of multiple points in the
signal chain. Additional visual monitoring is available through the
inclusion of two LED bar graph meters, allowing the signals being fed
to the input and output of the unit, or the ADC input levels to be
viewed.
Versatile Impedance
As with the ISA 428, the ISA 430 MKII has a variable impedance option
on its classic transformer-based mic pre, ranging from 600 to 6800 ohms
(at 1kHz). This provides you with increased control over the
interaction between microphone and preamp, tailoring the response to
suit your needs. Pressing the 'Air' switch further extends this
principle, introducing an inductor circuit into the secondary of the
transformer, which adds clarity and 'air' to the signal
without the need for EQ.
Flexible Signal Path
The split configurable Inserts and changeable signal path order combine
to produce an unrivalled flexibility; herein lies the real benefit of
the ISA 430 MKII as a 'do-all' processor for the most demanding of
engineers. Both inserts can be used to separate the individual sections
of the channel strip. This means that if the post-mic output and ADC
inputs are in use, the ISA 430MKII can function as four discrete
processors simultaneously! Insert 2 can also be located post-dynamics
should this be required, and for further adaptability, the dynamics can
be shifted to a pre-EQ or post-sum position.
Compressor Section
A significant development from the original ISA 430 can be found in the
Compressor section, which now boasts a vintage opto circuit in addition
to the original discrete Class A VCA design. Selecting the optical
Compressor or Limiter results in a more colored sound, as opposed to
the extremely transparent VCA circuit. The ISA 430 MKII caters for the
most varied of signals, containing an 'Auto Release' function (switch
activated) that changes the release time with each transient to suit
the nature of the waveform. If the signal sounds excessively processed,
a remedy lies in the Compressor 'Blend' feature, allowing the pre- and
post-dynamics signals to be mixed. This can help restore a track's
natural dynamism without losing the desired effect of compression.
EQ Section
The ISA 430 MKII features the same classic Focusrite EQ as the original
ISA 110, but with two extra frequency values for both the high and low
shelving, and with the added benefit of being able to insert the EQ
into the sidechain of the Compressor and Gate sections. This allows for
fully frequency-conscious compression, gating and expansion, making the
ISA 430 MKII the most powerful dynamics processor yet developed.
Gate Section
The Gate section uses the Focusrite Class A VCA as the control element
to remove the effect of unwanted interference and high levels of
wide-band system noise build-up. Switching this section to expand mode
causes the Gate to function as an Expander. Instead of cutting off any
signal below the threshold, an expander proportionately decreases it.
This provides a more natural sound when reducing noise from
non-percussive sources (especially vocals).
'Hysteresis' increases the level-difference between the gate switching
on and switching off, and prevents the gate oscillating ('chattering')
with particular combinations of input signal and threshold settings.
This function is particularly useful when gating a signal with a very
long decay time and large amounts of level modulation (for example a
Grand Piano).
De-Esser Section
The ISA 430 MKII's De-esser is based on a low-distortion optical
technology design, allowing transparent removal of excessive sibilance
from a vocal performance. The circuit uses phase cancellation to create
a smoother and less intrusive de-esser than traditional
compression-based designs.
The Audible Difference!
All four dynamic processors; the compressor, gate, expander and
de-esser, feature Focusrite's unique 'Listen' feature. Selecting
'Listen', inverts the operation of the processor, so only the chosen
frequencies that are being affected can be heard, rather than straining
to hear the overall effect in a complex signal.
Soft Limiter
The sensitively designed soft Limiter, also present in the ISA 428, can
be made to act on both the analogue output and the inputs to the
optional ADC. The gradual changes in ratio leading up to 0dBFS produce
a gentler limiting effect whilst still preventing a level overload.
Optional A/D Card
The optional stereo A/D card
provides the ISA 430 MKII with 24-bit 192kHz capabilities and employs
the same converters as those featured in the TEC award nominated ISA
428.
Focusrite ISA 430 MK II Producer Pack 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: >1M Ohm
Mic
*Gain Range: 0 to +60dB in 10dB steps
*Input Impedance: Variable as follows: 600 Ohm, 1k4 Ohm, 2k4 Ohm, 6k8 Ohm
*EIN: -128dB with 150 Ohm 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
EQ
*Low Pass Filter: 18dB/oct from 400Hz to 22kHz
*High Pass Filter: 18dB/oct from 20Hz to 1k6Hz
*Parametric section is comprised of: Low-mid & Hi-mid parametric,
each with continuously variable boost/cut with centre detent, frequency
sweep control with two ranges, and fully variable Q. Low-mid
frequencies 40Hz to 400Hz (120Hz to 1k2Hz when x3 is pressed). Hi-mid
frequencies 600Hz to 6kHz (1k8Hz to 18kHz when x3 is pressed)
*Shelving section is comprised of: High Frequency Shelf: The frequency
range steps are 1.5kHz, 3.3kHz, 6.8kHz and 15kHz (2.2kHz, 4.7kHz, 10kHz
and 18kHz when Hi Range is engaged). Low Frequency Shelf: The frequency
range steps are 20Hz, 56Hz, 160Hz and 460Hz (33Hz, 95Hz, 270Hz and
655Hz when Hi Range switch is engaged)
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
Weight
*7.58kg
*16.7Ibs
Dimensions
*484mm (W) x 85mm (H) x 250mm (D)
*19" (W) x 3.5" (H) x 9.8" (D)
The Focusrite ISA 430 MK II: Highest possible level of quailty!
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Features
* ISA-series transformer-based pre-amp
Featuring mic impedance switching and unique ‘mic air’ effect (a wire-wound inductor for increased spaciousness).
* Dual topology compressor
The ISA 430 MkII is the first ISA to feature both the classic transparent VCA circuit, and avintage optical circuit with both soft compression and crunch settings.
* Unmatched flexibility
The ISA 430 Mk II features an incredible variety of insert points and variable signal path arrangements. It can operate as four independent modules!
* Precision VU metering at multiple points
Including 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 with two additional shelving positions.
* Gate and Expander
Proprietary Focusrite discrete Class A VCA Gate and Expander designs, now both featuring a 'Listen' option for precision control.
* De-esser featuring 'De-ess Listen'
A combination of EQ and phase cancellation are used to create a smoother and less obtrusive result.
* Optional Strereo 192kHz ADC
Embodies cutting-edge conversion technology, incorporating Focusrite analogue circuitry to deliver A/D conversion of the highest quality (120dB Dynamic range).
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