Focusrite ISA Two

The ISA Story goes back to 1985, when Sir George Martin commissioned legendary designer Rupert Neve to design new modules for the console at AIR Montserrat. They were so successful that more were commissioned for AIR London. These original modules form the basis of today’s Focusrite ISA range – delivering the legendary Focusrite sound to leading studios, artists, producers and engineers around the world. Literally hundreds of hits have been made with the Focusrite ISA Range – and continue to be made today.

Two legendary mic pres
Focusrite’s ISA Two brings together a totally independent pair of legendary 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. Two is a nice round number – ideal for recording, say, a vocal and an instrument, or a stereo piano. But though you may only need two mic pres, you owe it to your craft to choose the best. (And if you need more, we offer ISA 428 Mk II 4-channel and ISA 828 8-channel units too.)

Variable input impedance
We’ve made one little adjustment to the mic pre. The original ISA 110 had a single input impedance that was ideal for the mics of the time. We’ve added three more, allowing you to get the very best out of any microphone, vintage or modern. Give a vintage mic the input it expects to get a traditional, warm sound. Pair the ISA Two with modern microphones and get the most transparent sound imaginable. Or experiment and pull out the inner character of any microphone you care to try. Couple that with up to 80dB of gain and you can be ready for anything.

Front panel instrument inputs
In addition to the mic pres, there are front panel instrument inputs for instant access, along with rear-panel line ins. There’s also a balanced insert point on the rear panel, actuated with a front-panel button so you can insert the EQ, dynamics or other processors you need. Add to that the user-calibrated 8-LED metering and variable cutoff high-pass filter and you know that with the ISA Two you’ll have everything you need to get the highest quality sound into your recordings.


1/4" instrument input
Variable input impedance - Low, ISA 110, Medium, High
Input selection - Mic, Line, Instrument
0 - 30 dB/30 - 60 dB gain switch
Phantom power switch
Phase invert switch
0 - 60 dB gain in 10 dB steps
0 - +20 dB continuously variable trim
Variable high-pass filter with on/off switch
Insert point on/off switch
Eight-LED user-calibrated level meters
Single power switch

XLR-F mic inputs
1/4" TRS line inputs
1/4" TRS Sends
1/4" TRS Returns
XLR-M line output
Single peak meter calibration dial
Single IEC power socket

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