Focusrite ISA TWO

2-channel microphone preamplifier

• Two independent ISA preamplifiers with Lundahl LL1538 transformer
• Variable impedance at four levels for each channel
• Mic, line and DI inputs for both channels
• Balanced insert points and variable high-pass filter
• Calibratable 8-LED metering, transparent or colored sound
• Focusrite 3-year warranty

Focusrite ISA Two: two classy mic preamps in one chassis

Focusrite's ISA Two offers a pair of microphone preamplifiers derived from the historic ISA 110 module. Each channel is completely independent and combines high-quality solid-state components with the famous Lundahl LL1538 transformer, originally chosen by Rupert Neve. The result is a professional, warm and defined sound, perfect for vintage or modern microphones.

Variable impedance and gain up to 80 dB

Both channels have input impedance selection (including the original ISA110), for perfect matching with any microphone. Gain is up to 80 dB (60 dB variable + 20 dB trim), offering high dynamic range and maximum versatility even with weak signals.

Full Connections: Mic, Line and DI

ISA Two has Mic and Line inputs on the rear panel, and DI on the front panel, accessible via 1/4" TRS jacks. Each channel can be independently configured, making the unit ideal for stereo recordings, vocals and guitar, or complex instrumentation.

Precise control and flexible routing

Each channel has a variable high-pass filter (16-420 Hz), balanced insert point and an 8-LED meter with adjustable calibration on the back. This allows accurate level management and the insertion of external effects such as EQ or compressors.

Plugin bx_console: the Focusrite sound in your DAW

With the Brainworx bx_console Focusrite plugin, you can bring the warmth and musicality of the ISA 110 and 130 modules directly into your digital workstation. Official emulation recreates the sound of iconic Focusrite consoles from the 1980s and 1990s.

Technical Specifications.

• Mic gain: 0-60 dB in 10 dB steps + 0-20 dB trim
• Variable impedance: 4 selectable values, including ISA110
• Mic response: -0.5 dB at 10 Hz, -1 dB at 135 kHz (0 dB gain)
• Inputs: Mic (XLR), Line (TRS), DI (1/4" jack)
• Insert points: balanced, front-activated
• High-pass filter: 16-420 Hz, 18 dB/octave
• Meters: 8 LEDs per channel, calibratable
• Crosstalk: -85 dB (mic) / -91 dB (line)
• DI impedance: 2 MΩ, 10-40 dB gain
• THD (line): 0.0001
• Warranty: 3 years Focusrite