Focusrite ISA Two 2-channel Microphone Preamp

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Focusrite ISA Two 2-channel Microphone Preamp

R20,895FREE DELIVERY

The ISA preamp sound is quintessentially British, well-rounded, and with plenty of detail and punch. The Focusrite ISA sound can be heard on countless records made throughout pop & rock history.

The ISA Two combines this timeless sound with contemporary features to meet modern demands. Rack form factor, clear metering and versatile controls/connectivity – all in one!

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SKU: ISATWO Categories: , Tag: Brand:
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Description

Two Channels Of Classic Focusrite Mic Pres

Focusrite’s ISA Two brings together a totally independent pair of classic ISA microphone preamps from the original ISA 110 module, combining the best of traditional solid-state electronics with the original input transformer specified by Rupert Neve – the Lundahl LL1538.

Each mic pre has the option of mic, line or the front-panel instrument input, with variable input impedance to ensure you are getting the best performance from the source. Up to 60dB of gain is available on the first four-position rotary and gain range switches, with a further +20dB of continuously variable trim, meaning a huge 80dB of gain is available should it be required. The high-pass filter features variable cut-off frequency between 16 and 420Hz. A pair of 8-segment LED meters show peak signal level in dBFS, while a rear-panel pot allows calibration to suit your A-D converters. Rear-panel insert points allow the use of inline processors such as compression.

Features:

  • Classic ISA mic preamp design featuring Lundahl LL1538 input transformer
  • Front-panel instrument inputs
  • Dedicated TRS line input socket with front-panel switch
  • Switchable input impedance including classic ISA 110 setting
  • Dedicated insert points
  • User-calibrated peak-level meters

Specifications

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

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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

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