Used in a smoke free home project studio everything works flawlessly , cosmetically there is some rack rash all pots are in great shape it is an amazing piece of gear message with any questions and Happy Bidding!Focusrite's Producer Pack Turns TwoThe ISA430 MKII represents the pinnacle of Focusrite's analog channel strip technology, bringing together all the classic designs in one comprehensive production tool. Augmented with additional features and flavors, alngside unmatched internal routing and connectivity, the ISA430 MKII enables today's recording professional to enjoy the unique sonic contribution of these heritage designs within one extremely versatile processor.Focusrite ISA430 MKII at a Glance:Easy visual monitoring with VU and LED metersVariable impedance mic preamps for fine-tuning mic input levelsFlexible signal path provides up to four discrete inputs at onceCompressor features vintage opto plus Class A design.Impeccable EQ drawn from the ISA 110The ISA430 MKII Input SectionThe input section on the ISA430 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.Tailored ImpedanceAs with the ISA428, the ISA430 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 'spaciousness' to the signal without the need for EQ.Flexible Signal PathThe split configurable Inserts and changeable signal path order combine to produce an unrivalled flexibility; herein lies the real benefit of the ISA430 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 ISA430 MKII 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 SectionA significant development from the original ISA430 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 ISA430 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 SectionThe ISA430 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 ISA430 MKII the most powerful dynamics processor yet developed.Gate SectionThe 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 modecauses 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 SectionThe ISA430 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.'Listen' to the 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 LimiterThe 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 CardThe optional stereo A/D card provides the ISA430 MKII with 24-bit 192kHz capabilities and employs the same converters as those featured in the TEC award nominated ISA428.Focusrite ISA430 MK II Producer Pack Features:Classic Focusrite transformer-based Mic-pre with variable impedance and 'Air' featureMulti format Compressor; 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 4 separate modular processors: mic pre, EQ, Dynamics and stereo ADCPrecision 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 110Post mic pre output for the shortest possible signal pathProprietary Focusrite discrete Class A VCA Gate and Expander designs'Listen' feature for precise control over compression, gating,expansion and de-essingDe-esser design based on optical technology for lower distortionand transparencySoft Limiter to avoid critical digital overloadOptional Stereo A/D - 24-bit 192 kHz Delta Sigma converterThe Focusrite ISA430 MK II: Serious input channel for uncompromised quality!