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ISA 428 MK2 4-Channel Microphone Preamp

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Free shipping on orders over $29.99

$1,890.00

$ 99 .00 $99.00

In Stock
  • PRISTINE SOUND QUALITY - Experience ultra-low noise and minimal distortion with a THD+N as low as 0.0009%, ensuring clean and transparent audio capture for professional recordings.
  • VERSATILE GAIN RANGE - Achieve optimal signal levels with a wide gain range from 0dB to +60dB, plus an additional 20dB variable trim, perfect for diverse microphone sensitivities and sources.
  • PRECISE IMPEDANCE CONTROL - Tailor the preamp to your microphone with variable impedance options (600, 1400, 2400, 6800 Ohms), optimizing signal transfer and capturing the true character of your mics.
  • FLEXIBLE CONNECTIVITY - Seamlessly integrate into any studio setup with comprehensive I/O, including XLR mic inputs, 1/4" line/instrument inputs, and insert points for external processing.
  • ROBUST BUILD QUALITY - Rely on the durable 19" rack-mountable design, ensuring longevity and stability in demanding studio environments, complemented by a 2-year Focusrite warranty.


The ISA428 MkII provides four of Focusrite’s prestigious transformer-based microphone preamps. It features the same classic circuitry and renowned audio quality found in the original at a new level of affordability. With selectable input impedance, direct instrument inputs and an optional eight channels of high-quality analogue to digital conversion, the ISA428 MkII creates the perfect front end for the discerning recording professional.


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