Some great features of this product include:
- ISA-series transformer-based pre-amp, featuring mic impedance switching and unique ‘mic air’ effect (wire-wound inductor for increased spaciousness)
- First ISA to feature both the classic transparent VCA circuit, and a vintage optical circuit with both soft compression and crunch settings.
- Incredible variety of insert points and variable signal path arrangements – 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, with 2 additional shelving positions
The Focusrite ISA430 MkII is the most versatile analog channel strip availableView larger Focusrite ISA430 MkII Producer Pack Channel Strip Standing for Input Signal Amplifier, the ISA range was born out of the original Focusrite Forte console of the late ’80s. The core modules from this console live on with Focusrite’s current range of ISA products and the choice of the world’s finest producers and engineers. Classic Focusrite Elements The ISA430 MkII brings together a set of classic Focusrite heritage elements: transformer-based mic pre with variable input impedance, versatile equalization including two dual-range parametrics, dual-mode compressor, VCA-based expander/gate with “hysteresis” setting, phase-cancellation de-esser for more natural processing, and an 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 analog processor design and performance. There’s simply nothing quite like it. Focusrite’s heritage is steeped in mic pre designView larger Transformer-based Mic Pre With Variable Impedance Since the original Rupert Neve designed ISA 110 module, microphone preamps have always been at the center of everything Focusrite does. The ISA430 mic pre suits almost all mics and 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 maximize flatness and transparency or deliberately bring out the special features of your chosen mic, such as a presence boost or high/low-end roll-offs. And there’s a special air button that brings in an inductor to enhance the effect without needing additional EQ. The ISA430’s vintage optical design offers the feel of a traditional compressorView larger Versatile Dual Mode Compressor The compressor section features both a transparent VCA circuit, 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. ISA430 MkII features a versatile EQ section with two dual-range parametricsView larger 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 equalizer 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. Optional 192kHz/24-bit 2-channel A-D converter cardView larger Class-Leading A-D Conversion 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. ISA430 MkII’s rear panelView larger The Most Versatile Channel Strip The ISA430 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. Bring these elements together and you have the most versatile analog channel strip available. Four units in one, independently accessibleView larger Additional Features ISA430 MkII is four units in one: 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. Insert HPF, LPF, and EQ into the Dynamics sections for frequency-sensitive processing. The “Listen” function lets you audition the side-chain to fine-tune the effect. Expander/gate features a hysteresis setting to avoid chattering on difficult signals. De-esser is based on phase cancellation at the chosen frequency, for more natural sound.
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