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About this User Guide
This user guide applies to the ISA Two mic pre.
It provides information about installing and using the unit and how it can be connected to your system.
Should this User Guide not provide the information you need, then please consult focusritepro.zendesk.com,
which contains a comprehensive collection of common technical support queries.
®
Pro Tools
and Pro Tools | HD™ are trademarks or registered trademarks of Avid Technology, Inc. or its subsidiaries
in the United States and/or other countries.
Audinate® and Dante® are registered trademarks of Audinate Pty Ltd.
Box Contents
• ISA Two
• AC power lead
• Safety information cut sheet
Introduction
Thank you for purchasing the Focusrite ISA Two.
The ISA Two provides two of Focusrite's prestigious transformer-based microphone preamps and can be used
to record microphone, line-level or instrument sources. Microphones and line-level sources are connected via
the rear panel, whilst instrument inputs can be plugged directly into the front panel jack sockets.
The front panel also features gain, adjustable filter frequency and other settings such as phantom power,
phase and input impedance for both inputs. Peak level LED metering in dBFS is provided for each channel to
indicate when the output is reaching the digital clipping point; a meter calibration control is provided on the
rear panel.
First introduced in 1985, the ISA microphone preamp is renowned for outstanding transparency and subtle
warmth contributed by transformer core saturation. The variable impedance circuit allows ISA users to match
the preamp with a wide range of microphones.
ISA Two User Guide
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