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Proizvođač: FOCUSRITE ISA 430 MkII
Dostupnost: Nema na stanju
Šifra Proizvoda: 80274
Prikazana cena je za komad.

The ISA430 MkII brings together a set of classic Focusrite heritage elements: Classic Focusrite ISA transformer-based mic pre with variable input impedance. Versatile equalisation including two dual-range parametrics, HPF and LPF. Dual-mode compressor with both VCA and optical circuitry. VCA-based expander/gate with "hysteresis" setting to avoid chattering. Phase-cancellation de-esser for more natural processing. Optional 192kHz/24-bit A-D conversion with soft limiter.


ISA 430 MkII

The ISA430 MkII brings together a set of classic Focusrite heritage elements:

Classic Focusrite ISA transformer-based mic pre with variable input impedance
Versatile equalisation including two dual-range parametrics, HPF and LPF
Dual-mode compressor with both VCA and optical circuitry
VCA-based expander/gate with "hysteresis" setting to avoid chattering
Phase-cancellation de-esser for more natural processing
Optional 192kHz/24-bit A-D conversion with soft limiter
Together, they form a comprehensive channel strip with impeccable specifications. But the ISA430 MkII is much more than that. The four main elements – mic pre, EQ, Dynamics and A-D converter – can be accessed individually and each used as a separate processor. Elements can be chained and patched together via multiple inserts and in different orders to form a variety of signal paths to meet every processing requirement. Used as either a comprehensive channel strip or as separate processors, the ISA430 MkII offers you the pinnacle of classic Focusrite analogue processor design and performance. There’s simply nothing quite like it.





Classic Focusrite ISA Mic Pre


The mic pre features a transformer-based design, with variable input impedance from 600 to 6800 ohms – so it will get the best out of any microphone, from modern condensers to the most finicky ribbon types. Depending on your choice of setting, you can maximise flatness and transparency or deliberately bring out the special features of your chosen mic, such as a presence boost or high/low-end rolloffs. And there’s a special “air” button that brings in an inductor to enhance the effect without needing additional EQ.









Versatile Dual Mode Compressor


The compressor section features both a transparent VCA circuit, which can be used to apply significant amounts of compression without audible artefacts, and a vintage optical design that brings with it the characteristic feel of a traditional compressor. Optional auto release and “blend” control add to the section’s flexibility, the latter by allowing mixing of the original signal with the compressor output, maintaining as much as possible of the natural dynamics without losing the benefits of compression.


The Gate/Expander section is based on a transparent VCA design and includes a “hysteresis” setting that stops the gate chattering on difficult signals, while the de-esser is based on phase cancellation at the chosen frequency, rather than being compressor-based, leading to improved naturalness of sound.



Focusrite ISA 110 Derived EQ


The EQ section is exceptional, with HPF and LPF, two separate bands of parametric EQ (each with normal and x3 ranges for maximum versatility), and HF and LF shelving sections. In addition, individual parts of the equaliser can be switched into the side chain of the dynamics sections, allowing frequency-conscious compression, gate keying and other effects, while a “Listen” button allows you to audition the side-chain so you can tweak the EQ to get exactly the dynamics effect you’re looking for.



Class-Leading A-D Conversion

And finally, there is an optional A-D converter card which adds two channels of flawless 24-bit A-D conversion at sample rates up to 192kHz and with 120dB of dynamic range, preceded by a soft limiter to prevent clipping. Like the other parts of the ISA430 MkII, it can be used as part of the channel strip or as a completely independent unit.

The Most Versatile Channel Strip

Bring these elements together and you have the most versatile analogue channel strip available, with uniquely flexible patching and routing in addition to four powerful processors that can be used completely independently. And all with that unique Focusrite heritage sound. The ISA430 MkII. Nothing sounds like it – in so many ways.



Key Features

The Most Versatile Channel Strip

The 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 A-D conversion.

Transformer-based Mic Pre with Variable Impedance

The 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 Accessible

Use 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 Options

Insert 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 Dynamics

Expander/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.



We always quote 'real world' performance figures (measured to the AES17 standard). Some companies choose to quote chipset performance, which is misleading, and here's why.


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


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


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)


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


Threshold Range: 22dB
Frequency Range: 2k2 to 9k2
Ratio at centre frequency: 2:1


Threshold Range: 20dBu
Ratio: infinite (Brick Wall)
Attack: Frequency dependent




484mm (W) x 85mm (H) x 250mm (D)
19" (W) x 3.5" (H) x 9.8" (D)
Optional A-D Converter Specifications

Output formats (All channels)

AES/EBU (5V / 110 ohms), S/PDIF (0.8V / 75 ohms)
ADAT lightpipe (SMUX I/II/IV)
S/PDIF lightpipe

Bit depth

24 bits
AES3 output jitter

<:500ps, 50Hz-100kHz
<:400ps, 700Hz-100kHz

Frequency response

All ranges: 20Hz–20kHz ± 0.3dB (50Hz–16kHz ± 0.1dB)
176.4kHz, 192kHz : 16Hz–55kHz ± 0.5dB

–117.5dB A-weighted, audio band-limited, 1kHz, -60dB FS input
Maximum 0.004% at –1dB FS (1kHz)
Minimum 0.0008% at –13dB FS (1kHz)

Idle channel noise

113.5dB at 44.1kHz, CCIR-weighted, full bandwidth


–109dB at 12kHz

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