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Mic Pres & Processing

Focusrite

ISA Two

Code: 2038

Dual Channel Microphone Preamp

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Pre-Order Usually available within about 1 week from order

years

The Focusrite ISA Two is a two channel transformer-based microphone preamplifier incorporating legendary British Focusrite ISA preamp technology.

Expanding on the renowned ISA (Input Signal Amplifier) Series , the ISA Two delivers the same premium quality microphone preamplification used on countless hit records during the last 40 years. The rack-mounted ISA Two is ideal for dual mono or stereo operation and features variable input impedance allowing you to get the very best results from any microphone.

The ISA Two delivers up to 80 dB of low-noise gain. Each channel has balanced insert points, variable high-pass filter and variable input impedance. Line, microphone and high impedance (DI) sources can be connected, allowing easy DAW integration.

Each channel's high-pass filter has a variable cut-off frequency of 16 to 420 Hz selected from the front panel and has an attenuation of 18 dB/Octave - the same design as used in the ISA110 module introduced during the 80's. The high pass filter, phase-invert, insert point and phantom power can all be switched in and out per channel using front panel controls.

Eight-segment LED arrays provide clear metering of both signals, and a calibration knob on the rear panel allows lining up of analogue signal levels to prevent clipping and optimize your signal path to any DAW or recording system.

    • Transformer-based mic preamplifiers
    • Variable input impedance
    • Up to 80 dB of clean, low-noise gain
    • Variable cut-off high-pass filter
    • Eight-segment user-calibrated LED meter per channel
    • Two front panel instrument inputs
    • Dedicated per-channel insert point
    • 1U 19" rack-mount format
    • Weight: 5.4Kg
  • MIC INPUT RESPONSE
  • Gain Range (Mic): 0 dB to 60 dB in 10 dB steps, plus 0 dB to 20 dB continuously variable trim
  • EIN (Mic): Measured at 60 dB of gain with 150 O source impedance and 22 Hz-22 kHz band pass filter -127 dB.
  • Noise (Mic): Noise at output with unity gain (0 dB) and 22 Hz-22 kHz band pass filter -97 dBu
  • Frequency Response (Mic): At minimum gain (0 dB)-0.5 dB at 10 Hz,?-1 dB at 135 kHz, relative to 1 kHz
  • At 60 DB Gain (Mic): -6 dB at 10 Hz, -1 dB at 115 kHz, relative to 1 kHz
  • Crosstalk Channel To Channel (Mic): Mic input, with I/P = 0 dBu, gain = 0 dB @ 1 kHz input to channel A, channel B output = -85 dB.
  • Test54654654654: test+O
  • LINE INPUT RESPONSE
  • Gain Range (Line): -20 dB to 10 dB in 10 dB steps, plus 0 dB to 20 dB continuously variable trim
  • Input Impedance (Line): 10 kO from 10 Hz to 200 kHz
  • Frequency Response (Line): At minimum gain (0 dB)-0.3 dB at 10 Hz, -1 dB at 80 kHz, relative to 1 kHz
  • Crosstalk Channel To Channel (Line): Line input, with I/P = 0 dBu, gain = 0dB @ 1 kHz input to channel AChannel B output?= -91 dB
  • INSTRUMENT INPUT RESPONSE
  • Gain Range (Instrument): 10 dB to 40 dB continuously variable trim
  • Input Impedance (Instrument): 2 MO
  • Noise (Instrument): Measured with 22 Hz-22 kHz band pass filterMinimum gain ( 10 dB) = -95 dBu
  • Frequency Response (Instrument): At minimum gain ( 10 dB)-0.1 dB at 10 Hz,?-1 dB at 115 kHz, relative to 1 kHz.
  • At Maximum Gain ( 40 DB) (Instrument): -2.5 dB at 10 Hz, ?-1 dB at 110 kHz, relative to 1 kHz
  • HIGH-PASS FILTER
  • Roll-Off: 18 dB per octave (3 pole filter)
  • Frequency Range: Continuously variable from 16 Hz to 420 Hz (-3 dB)
  • WEIGHT AND DIMENSIONS
  • W X D X H : 480 mm x 280 mm x 44 mm
  • Weight: 3.7 kg