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The Midi Store :: Pro Audio :: Outboard Gear :: Pre-Amps & Channel Strips :: Focusrite ISA 220 Session Pack B stock
The ISA 220 Session Pack provides all you need
to record your session with precision and Focusrite sonic performance.
It also has a Precision VU meter which is switchable to allow you to
monitor either input level or compressor gain reduction. Situated above
the VU meter is a 32 LED digital meter for monitoring from either the
internal input or an external input which gives access to the second
channel of conversion on the optional high quality stereo A/D card. To
the right of the Digital Output meter is a global bypass switch to
allow for real A/B comparisons.
Three input options are provided to give compatibility with Mic, Line or Instrument sources. Switching between these input options is available on the front fascia with LED's indicating the active input. All inputs are transformer based contributing to that all important Focusrite signature sound of clarity without colouration, with incredibly low noise and distortion figures. Other switchable controls available on the front fascia include controls and indicators for the Digital option, in/out selectors for each of the sections and a select switch between Mic, Line or Instrument inputs. An instrument jack is immediately available on the front fascia for quick 'plug and play' access. ISA 220 features a 'Compressor Pre EQ' switch. Normally the compressor is featured post the EQ. With this switch you can choose to place the Compressor either pre or post EQ. Also featured in the compressor section, alongside the auto release is the new Blend feature, a unique feature to the ISA 220 allowing smoother compression at more extreme settings. When switched in, 'Blend' allows you to mix the uncompressed signal with the compressed, thus retaining a variable level of dynamics from the original source. The circuit uses a combination of threshold dependent EQ and phase cancellation to create a de-esser smoother and less intrusive than traditional compression based designs. You also have the option here, with 'De-ess listen' switched in, to monitor the exact frequency you are effecting. Selecting 'De-ess listen' inverts the operation of the De-esser and allows the user to monitor only those selected frequencies which will trigger the activation of the De-Esser, rather than hearing the overall effect in a complex signal. The output section of the ISA 220 features the same frequency adaptive limiter as the ISA 430. The limiter uses three separate stages of Optical based circuits with different limiting properties to give true distortion-free limiting. Fast limiters tend to have problems with complex signals that contain sustained low and mid frequency information and tend to "chop holes" in the audio when HF transients trigger the limiting. The ISA frequency adaptive limiter has three frequency bands with different attack times as follows: LF slow attack, MF quick attack and HF very quick, to catch fast transients. The Limit-in LED illuminates when the limiter is active. An upper threshold is fixed at +20dBu to prevent overload of the internal (or an external) A/D converter. Finally, a variable control adjusts the module output level between -60dB and +6dB ensuring optimum levels exiting the unit. Features
Specification Blend function in the compressor module. This allows the user to blend compressed signal with uncompressed signal, in the way that many producers do via the faders of an external mixing console. Inst. Hi Z I/P
Mic I/P
Compressor
De-Esser
Limiter
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