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Focusrite ISA Two Dual Channel Microphone Preamp


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MSRP: Old Price $1,124.99 Discounted Price $899.99 Save : $225.00 (20%)
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MSRP: Old Price $1,124.99 Discounted Price $899.99 Save : $225.00 (20%)
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You may only need a couple of mic preamps, but they need to be the very best. The ISA Two dual-mono mic pre is the ideal solution: two independent channels of the highest quality classic Focusrite mic pres, with line in and front-panel instrument inputs – no DI box required. Based on the legendary designs found in the Focusrite Forte and Studio Consoles, ISA Two is the ideal front-end for your rack.

Superb sound spanning four different decades
Focusrite’s microphone preamplifiers go back to the original Focusrite ISA 110 modules, when Rupert Neve was commissioned by George Martin in 1985 to create a no-compromise channel strip for his Neve console. Combining the very best solid-state electronics with transformer coupling, Focusrite mic pres have played a key part in the recording of hundreds of hit records and they’re the choice of leading artists, producers and engineers around the world.

Lundahl Transformers
At the heart of the ISA Two is a pair of Lundahl LL1538 transformers. ISA products have relied on Lundahl from the beginning, since their components were originally specified in 1985. The LL1538 features a 3-section winding, resulting in very low leakage inductance and, as a result, an extended frequency response. They’re encapsulated in mu-metal cans to shield them from stray magnetism.

Variable input impedance and up to 80 dB of gain
ISA Two features two classic Focusrite mic preamps, with four impedance settings including the original ISA 110 setting. Variable input impedance allows you to go for an accurate, transparent sound or choose to highlight the character of your favourite vintage mic – and anywhere in between. With up to 80 dB of low-noise gain, ISA Two can perform in the most demanding situations - really bringing your ribbon, condenser or moving coil mics to life.

Insert your choice of processors
Each channel has a fully-balanced insert point accessed via TRS sockets on the rear panel and activated with a front-panel button, so it’s easy to use outboard processors with the ISA Two. Just plug in your choice of EQ, compressor or limiter.


Front panel, per channel:
  • 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
Rear panel, per channel:
  • 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


Preamp Type- Solid State
Number of Channels- 2
Frequency Response- 10Hz-135kHz
Phantom Power - Yes
Analog Inputs- 2 x XLR, 2 x TS (inst), 2 x TRS (line)
Analog Outputs- 2 x XLR
Other I/O- Insert I/O
Rackmount Spaces- 1U
Height- 1.75"
Depth- 11"
Width- 19"
Weight- 8.16 lbs.
Manufacturer Part Number- ISA Two

love this preamp -


wanted a clean preamp that wasn't sterile sounding for my acoustic guitars - was the right choice - love it


new jersey


Twice the fun!


The preamps are flawless in this. I also have the ISA one, which is a single box that is not normally rack mounted. The ISA one has a separate DI input and separate DI output so you could record a vocal and direct in guitar to 2 different tracks , the ISA one and ISA two sound the same and you get 2 preamps in one unit. The ISA Two adds very little color to a performance. It adds a bit of warmth and punch but stays true to the mics I have used. It is one of the best dual rack mount preamps I've used for the money. if you haven't used one you should definitely try it. This is a real hands on product review from [email protected] Sam Ash Indianapolis


Indianapolis, IN


ISA Two Dual Channel Microphone Preamp

5.0 2



Warranty Info:

The manufacturer's warranty covers parts for three year and labor for one year from date of purchase.  The warranty excludes damage from misuse, abuse, and contains other exclusions.

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