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FOCUSRITE ISA220 CHANNEL STRIP

Focusrite ISA220 Channel Strip

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of the original circuits of the flagship ISA 430 MKII Producer Pack, and also has some new facilities of its own. It also features the same digital output option as the original ISA 430, providing you with a high quality digital route direct from the ISA 220 into your digital recording system.

The ISA 220 starts with the classic Focusrite transformer-coupled microphone pre amp, with phantom power and phase reverse. A four-band Focusrite EQ section follows, based on the EQ circuits featured in the ISA 430 and ISA 110. The compressor features a proprietary Class A VCA with side-chain circuitry, and can be placed in the signal flow before the EQ at the press of a button, if desired. Also included is a unique feature labelled "Blend", which provides a means of achieving smoother compression at extreme settings by mixing uncompressed source signal along with the compressed portion.

The ISA220 also features an opto-based de-esser which uses a combination of EQ and phase cancellation to create a smoother and less obtrusive result. Last but not least, a frequency adaptive, 3-band limiter is provided to ensure distortion-free limiting.

For visual reference, ISA 220 provides a classic analogue VU style meter which can be switched to display input or compressor gain-reduction levels. A pair of 16 segment LED meters are included to display output levels, both analogue and digital in conjunction with the optional 24-bit/96 kHz stereo digital output (AES/EBU, S/PDIF & TOSLINK) card. This card offers 44.1 - 96 kHz operation and can be used as a high-quality mono / stereo tracking converter, or at mix down as a stereo converter for final mastering.

Key Features

  • ISA-series transformer-based pre-amp
    The benefits of Focusrite's classic pre-amp topology include superb common-mode rejection, an excellent overload margin, an extremely low noise floor and super-wide bandwidth.
  • Focusrite EQ
    A four-band EQ, based on the EQ circuits featured in the ISA 430 and ISA 110.
  • VCA-based Compressor with 'Blend'
    Achieve smoother compression at extreme settings by mixing the uncompressed source signal along with the compressed.
  • De-esser featuring 'De-ess Listen'
    A combination of EQ and phase cancellation are used to create a smoother and less obtrusive result.
  • Precision VU metering
    a classic analogue VU style meter which can be switched to display input or compressor gain-reduction levels.
  • Frequency adaptive, 3-band limiter
    Ensure distortion-free limiting and helps to prevent critical digital overloads.
  • Optional 24-bit/96 kHz stereo digital output
    This AES/EBU, S/PDIF & TOSLINK card - Delta Sigma converter running at 128kHz oversampling and dithers down to 20- or 16-bit.

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

Weight
7kg
15.4Ibs

Dimensions
484mm (W) x 85mm (H) x 250mm (D)
19" (W) x 3.5" (H) x 9.8" (D)

The Focusrite brand was established in 1985 and the founding principles of the company were to develop products that sounded more musical, in addition to just measuring well - today,we still carry these founding principles forward in our class-leading and award-winning designs.

We measure our success by the success of you, our clients, and you will find Focusrite product prominent in professional and project studios throughout the world.

Based just outside of London, we work with the best design talent throughout the world to bring you the tools to enhance the way you work. Our product is made with pride and principle in a highly automated ISO 9002 factory with significant level of test by engineers who themselves are musicians and understand the part our product plays in your process.

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FOCUSRITE

Focusrite warrants its products to be free from defects for 1 year from the date of purchase.

FOR SUPPORT WITH YOUR PRODUCT CONTACT:
800-431-2609