Focusrite ISA 428 MkII – Four-Channel Microphone Preamp
Bring legendary studio-quality sound to your setup with the Focusrite ISA 428 MkII, a four-channel mic preamp that combines classic transformer-based tone with modern flexibility. Perfect for professionals who need pristine signal paths and versatile routing options, this powerhouse unit is built around the iconic Lundahl LL1538 input transformer—the very same found in the original Focusrite ISA 110 module.
Key Features:
🎙 Four High-End ISA Mic Preamps – Classic Focusrite transformer-based design with up to 80 dB of ultra-low noise gain.
🔧 Variable Input Impedance – Choose between four impedance settings to match or shape the tone of any microphone.
🎸 Dedicated Instrument Inputs – Front-panel DI inputs make it ideal for bass, guitar, and other line-level instruments.
🎚 High-Pass Filters on Every Channel – Independent 75 Hz filters help clean up low-end rumble and stage noise.
🔗 Optional A-D Conversion (via ISA ADN8) – Add an 8-channel high-quality digital output card for seamless DAW integration.
💡 LED Metering – Vintage-style LED meters with accurate peak indication for easy level monitoring.
Whether you're tracking vocals, drums, guitar, or full band sessions, the ISA 428 MkII delivers the rich analog warmth and transparency that Focusrite is renowned for. Trusted in world-class studios and now within reach for serious engineers and producers.
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"Legendary Focusrite tone. Four channels. One premium preamp solution."
