FOCUSRITE ISA 220 SESION PACK MIC. PREAMP and COMPRESSOR

Overview:

The ISA 220 Session Pack provides all you need to record your session with
precision and Focusrite sonic performance. It features many of the original
circuits of the flagship ISA 430 Producer Pack along with some new features
of its own. It also features the same digital option as the ISA 430, providing you
with a high quality digital route direct from the 220 into your digital recording system.

Precision VU metering of input level or compressor gain reduction (switched)
16 LED Digital Output meters for both internal and external inputs
Classic Focusrite transformer based Mic pre
Switched High and Low pass filter controls
Switched High and Low shelving filter frequency controls
Optional Stereo A/D ? 24 bit 96 KHz Delta Sigma converter running at 128kHz
oversampling: dithers down to 20- or 16-bit
Proprietory Focusrite discrete Class A VCA Compressor side chain design for
lower distortion and Noise performance
Illuminated push button for switching the compressor between pre and post EQ
New Blend feature for adding dynamics into the compressed signal path
New De-esser design based on optical technology for lower distortion and
transparency
‘De-esser Listen’ for precise control over sibilance
Frequency adaptive limiter to avoid critical digital overs

Specifications
Inst. Hi Z I/P

Noise: -96dBu
THD: 0.003% with 0dBu

Mic I/P
Noise: 123dB EIN with 150 Ohm input resistance at 60dB of gain
THD: 0.0008%

Compressor
Threshold Range: -28dB to +12dB
Ratio: 1.5:1 to 10:1
Slope: Soft knee
Attack: 500ms to 25ms
Release: 100ms to 4s, variable or auto (program dependent)

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