Focusrite ISA Two High Grade Mic Preamp


The Focusrite ISA Two is a premium dual microphone preamp. Developed by Rupert Neve to deliver a clean and warm sound with flexible applications. Perfect for Microphones, instruments, and even Line level inputs. This is a must have for any professional recording space.


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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.)

  • Lundahl LL1538 mic input transformer
  • Up to 80 dB of gain
  • Variable input impedance
  • User-calibrated metering
  • Front panel instrument and rear panel line inputs
  • Variable cut-off high-pass filter
  • Rear panel balanced inserts


Frequency Response: 10Hz (at -0.5dB) to 135kHz (at -1dB) relative to 1kHz
Gain range: 0 dB to +60 dB in 10 dB steps, plus 0 dB to +20 dB continuously variable trim
Input Impedance: Switched Impedance setting
Equivalent Input Impedance at 1 kHz
Low = 600 Ω
ISA 110 = 1.4 kΩ
Med = 2.4 kΩ
High = 6.8 kΩ

Signal-to-Noise Ratio: 121dB at (+24dBu)
THD: >0.0007% at 1kHz
Dimensions: 480 x 280 x 44 mm
Weight: 3.7kg

The Focusrite Three-Year Warranty

All Focusrite products are built to the highest standards and are designed to provide many years of reliable performance. In the event of a Manufacturing Defect becoming evident during the warranty period, Focusrite will ensure that the product is repaired or replaced free of charge. The warranty for any product purchased on or after the 1st January 2018 is a period of 36 months from the date of original purchase. The warranty period for products purchased on or prior to the 31st December 2017 is 24 months from the date of original purchase.

For more information, please visit the manufacturer's website.