Description

The ISA428 MkII provides four of FocusriteÕs 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.

First introduced in 1985, the ISA microphone preamp holds a reputation for outstanding transparency along with subtle warmth contributed by transformer core saturation. The addition of a variable impedance circuit allows ISA users to perfectly match the preamp with any microphone, or to use different settings creatively to shape the sound of the microphone. Unchanged for decades, the ISA microphone preamp topology offers incredible clarity and the signature Focusrite sound that makes it the top choice among many audio professionals today.

The optional class-leading eight-channel A-D converter option used with the ISA828 is also compatible with the ISA428 MkII. Along with the four mic preamp inputs, four additional inputs allow you to route other line signals through the converter.

Four instrument inputs, instantly accessible on the front panel, allow quick and easy connection without the need for a separate DI box. Extra processing can be placed between preamp and conversion via the units dedicated insert points, featured on every channel. Finally, accurate six-segment LED metering is designed to catch even the fastest transients on every channel.

Over 25 years, Focusrite has earned a reputation for bringing superb audio quality and engineering excellence to an array of audio professionals. Whether youÕre looking to preserve the sound of your classic microphones, or searching for the perfect front end for your digital studio, the ISA428 MkII brings legendary tools to your studio at an exceptional new price.

Red, RedNet, and ISA customers get a free plug-in from Focusrite and Brainworx

Brainworx bx_console Focusrite recreates the analogue signal paths of Focusrite’s revered ISA 110 and ISA 130 modules which were a part of the Focusrite Studio Console.

Designed and coded by the DSP geniuses at acclaimed software house Brainworx, the new bx_console Focusrite VST/AU/AAX plugin for Mac and PC faithfully captures the sound, feel, and styling of their original iconic hardware.

With bx_console Focusrite retailing separately for $349, its inclusion for free with all Red, RedNet, and ISA purchases is a huge deal!

In addition, customers who previously purchased any Red, RedNet, or ISA solution since January 2020 will have the plug-in available in their Focusrite account as long as they’ve registered the product.

Key Features

Four ISA series transformer-based preamps

ISA series mic preamps have been the producer’s choice on countless hit records over the last two decades.
Eight-channel optional A-D converter

Four additional A-D converter inputs allow eight channels of high-quality conversion, with a dynamic range of 122dB and jitter performance below 250 picoseconds.
Selectable impedance

Ideal for mic matching or extended microphone creativity. Settings include the ÔVintage ISA110Õ setting, providing the original Focusrite signature sound.
Four front panel instrument inputs

Instant access on the front fascia – no separate DI box required.
Dedicated analogue insert points

Switchable insert points are featured on every channel, allowing routing (between preamp and output) through additional external processing.
Variable high-pass Focusrite filter

Provided on every channel, this is the same filter as featured on the original ISA428.
Accurate LED meters for every channel

Clear metering designed to catch even the fastest and most elusive of transients.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.