User Guide

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Contents

1. Warnings and Cautions ........................................................................................................ 2

2. Contents .............................................................................................................................. 3

3. Getting Started and Powering Up ........................................................................................ 3

4. Front Panel ......................................................................................................................... 4

4.1 Metering .....................................................................................................................

5. Rear Panel ........................................................................................................................... 8

6. Digital Options ..................................................................................................................... 9

7. Recording a Microphone .................................................................................................... 12

8. Recording a Line-level source ........................................................................................... 13

9. Recording an Instrument ................................................................................................... 13

10. Two-channel Recording Options ...................................................................................... 13

11. Monitoring Options ........................................................................................................... 14

12. Applications ..................................................................................................................... 14

12.1 Mic Preamp Input Impedance ..................................................................................

12.2 Signal Connections ..................................................................................................

13. Specications ................................................................................................................... 17

14. Warranty .......................................................................................................................... 19

Getting Started and Powering Up

The ISA One is a high quality preamplier, which can be used to record microphone, line-level or instrument sources. Microphones

and line-level sources are connected on the rear panel, whilst instruments are plugged directly into the front panel. The front panel

also features gain controls and other settings such as phantom power and input impedance. A traditional moving-coil VU and an LED

peak meter are provided, both with a dial on the rear panel for calibration, to ensure a suitable signal level is achieved.

If wanting to maintain pristine Focusrite quality in the digital domain, an optional digital output card can be installed, for connecting

an AES, S/PDIF or ADAT™ signal directly to the DAW. With the card tted, the clock sample rate and sync source can be selected

using switches on the front panel.

A -way switch on the rear panel, labelled Power, supplies power to the unit, providing the supplied IEC mains lead is connected to

the socket below. Make sure that the ISA One is turned on before powering up any devices connected to the outputs.

The IEC mains lead supplied with the unit should have the correct moulded plug for your country. The wiring colour code used is:

For units shipped to the USA, Canada, Taiwan and Japan:

Live - Black; Neutral - White; Earth – Green

For units shipped to any other country:

Live - Brown; Neutral - Blue; Earth - Green and Yellow