Focusrite AMS-ISA-ONE

Availability: Available Unavailable

Product Type: Pro Audio

Product Vendor: Focusrite

Product SKU:

Details Overview Back in the mid-1980s, Sir George Martin commissioned console design legend Rupert Neve to build a series of new, ‘no compromise’ console modules for AIR studios. They were an enormous hit and formed the basis of the Focusrite...


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Product Details

Details

Overview

Back in the mid-1980s, Sir George Martin commissioned console design legend Rupert Neve to build a series of new, ‘no compromise’ console modules for AIR studios. They were an enormous hit and formed the basis of the Focusrite Studio Console, widely regarded as the best-sounding analogue recording console of all time. Today, the descendants of those modules are used in leading studios around the world, and their sought-after Focusrite Heritage Sound lies behind thousands of hit records. Today’s ISA Range from Focusrite puts the classic sound of Focusrite into your own studio or live performance.

Features

  • ISA series transformer-based preamplifier

  • Flexible independent DI channel

  • Switchable impedance

  • Headphone output with volume control

  • Dedicated insert point

  • Optional stereo 192kHz A-D converter

  • Lundahl LL1538 Input Transformer

  • Backlit VU meter with variable calibration

  • TRS Jack cue mix left input

  • TRS Jack cue mix right input

  • 1/4” TRS Jack headphones output

  • TRS jack send

  • XLR balanced line output

  • XLR DI output

  • TS jack DI through

  • XLR Mic input

  • One XLR and one TRS line input

  • XLR Instrument input TRS Jack

  • External ADC input TRS Jack

  • TRS jack return

Specifications

Gain range

0dB to 60dB in 10dB steps + 20 dB of variable gain

 

Input Impedance

Switched Impedance setting Equivalent Input Impedance at 1kHz

 

 

 

EIN (Equivalent Input Noise)

-126dB measured at 60dB of gain with 150 Ohm terminating impedance and 22Hz/22kHz band-pass filter

 

Noise

Noise at output with unity gain (0 dB) and 22 Hz-22 kHz band pass filter

 

Signal-to-Noise Ratio

106 dB relative to max headroom (9dBu)

 

Total Harmonic Distortion + Noise

Measured at medium gain (30dB) with a 1kHz -20dBu input signal and with a 22Hz/22kHz band-pass filter

 

Frequency Response

At minimum gain (0 dB)

 

 

At maximum gain (60dB)

 

CMRR (Common Mode Rejection Ratio)

98dB (Channel 1, 1kHz, maximum gain with +24 dBu input)

 

Crosstalk Channel to Channel

With 10dB@1kHz input to chA, chB output =104dBrA. With 10dB@10kHz input to chA, chB output = 84dBrA

 

Line Input Response

 

 

Gain range

-20dB to +10dB in 10dB steps + 20 dB of variable gain

 

Input Impedance

10 k? from 10 Hz to 200 kHz

 

Noise

Noise at main output with gain at unity (0 dB) measured with 50 ? source impedance and a 22Hz - 22 kHz band pass filter

 

Signal-to-Noise Ratio

Measured with a 22 Hz-22 kHz band pass filter

 

Total Harmonic Distortion + Noise

Measured with a 0 dBu input signal, and a 22 Hz-22 kHz band pass filter

 

Frequency Response

At unity gain (0 dB)

 

Instrument Input Response

 

 

Gain range

10dB to 40dB continuously variable

 

Input Impedance

High = greater than 1M

 

Low =greater than 300k

 

Noise

Measured with 22 Hz-22 kHz band pass filter

 

THD

At minimum gain (+10)

 

Frequency Response

At minimum gain (+10 dB)

 

 

At maximum gain (+40 dB)

 

Moving Coil (MC) Meter

factory calibrated to 0VU = +4dBu with 1kHz sinewave. With the VU Cal button pressed the meter can be adjusted on the rear panel to allow 0VU to equal +10dBu to +26dBu with the centre detent being equal to +22dBu.

 

Peak LED Meters

Calibrated in the detent position for 0dBFS = +22dBu, calibration is adjustable on the rear panel to allow 0dBFS to equal +10dBu to +26dBu

 

 

Routing for MC and Peak1 meter is after the HPF, pre insert send or switched post insert return. Peak2 is always pre ADC channel 2, which can be fed by external input or Instrument input.

LED Levels

As follows, when peak calibration is set to center detent on the rear panel. (This is when using the internal ADC).

 

 

 

 

 

 

Frequency Response

At minimum gain (+10 dB)

 

 

At maximum gain (+40 dB)

 

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