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Focusrite Introduces New ISA 220 Session Pack

Based on topology of ISA 430 Producer Pack By DMN Staff Writer
ISA 220 Session Pack, Focusrite's newest ISA Range product, is among several new Focusrite units to be presented at the NAMM 2002 show (in distributor Digidesign's booth #6606, Hall A).

ISA 220 is a single-channel analog processor housed in a 2U, 19 rackmount enclosure, designed to provide audio professionals in music and post with a complete channel strip of legendary Focusrite processing at a competitive price point. Based on the topology of the TEC award nominated ISA 430 Producer Pack, ISA 220 shares a number of similar processing functions with its big brother.

ISA 220 starts with the classic Focusrite transformer-coupled microphone preamp plus line and instrument inputs with phantom power and phase reverse. The next section consists of a four-band EQ plus high-pass and low-pass filters based on the EQ circuits from the ISA 430. The compressor features a proprietary Class A VCA and side-chain circuitry and can be easily placed before the EQ in signal flow. The compressor also includes a unique new ?Blend feature ? providing a means of achieving smoother compression at extreme settings by mixing some of the uncompressed signal along with the compressed portion. Following the compressor is an opto-based de-esser, which uses a combination of EQ and phase cancellation for a smoother, less obtrusive de-esser than conventional designs. Last but not least, a frequency adaptive, 3-band limiter is provided to ensure distortion-free limiting. Each ISA 220 processing section includes individual bypass switches as well as a master bypass for the entire signal path.

For visual reference, ISA 220 provides a classic analog VU meter and can be switched to display input or compressor gain-reduction levels. A pair of 16 segment LED meters is included to display output levels in conjunction with the optional A/D output card. A complement of XLR and 1/4 TRS jacks is provided on the rear panel for microphone input, line input/output, key input to the compressor, etc. A 1/4 TRS instrument input jack is also provided on the front of the unit.

An optional 24-bit/96 kHz digital output (AES/EBU,S/PDIF &TOSLINK) offers 44.1 96 kHz operation,16-, 20-and 24-bit resolution selection, and can lock to external Word Clock, including Pro Tools Super Clock. It can be used as a high-quality mono/stereo tracking converter, or at mixdown as a stereo converter for final mastering.

ISA 220 is currently shipping and carries an MSRP of $2,295 (USD). The optional 24-bit/96 kHz A/D board will follow and will have an MSRP of $525 (USD).

For more information, go to, or

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Related Keywords:Focusrite, ISA 220, NAMM, microphone, preamp

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