Focusrite Clarett 8PreX Rackmount Thunderbolt Audio Interface with 8 Mic Preamps

26 x 28 Thunderbolt interface with eight Clarett Microphone Preamplifiers and extended I/O.

The 26-in, 28-out Clarett 8PreX combines eight mic preamps, class-leading digital conversion and extra-low round-trip latency – enabling DAW plugins to be used while monitoring recordings. Clarett’s mic pre offers superbly low noise and distortion, plus the “Air” effect that models the sound of Focusrite’s renowned ISA transformer-based preamps. Complete with Focusrite’s precision 24/192 conversion offering up to 119dB real-world dynamic range, there’s never been a better, faster or easier way of getting audio into or out of a DAW.  Now Windows compatible (see specs for more info).



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£999.00 £832.50
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Focusrite’s Clarett 8PreX Thunderbolt interface is the best interface in its class, bar none. With 26 inputs and 28 outputs, it delivers eight redesigned Clarett mic preamps deployed direct from the front panel, as well as premium digital conversion and millisecond-level low round-trip latency. So low, in fact, that DAW plugins can be implemented while the user monitors recordings, for instance to add reverb in the headphones for a vocalist.

The fresh Clarett mic pre includes the switchable “Air” effect that reproduces the sound of Focusrite’s notorious ISA transformer-based preamps, as well as providing very low noise (EIN -128) and distortion. The Clarett 8PreX additionally supplies gain controls with a special law, making changes softer and more organic.

Focusrite has been well-renowned for top-quality digital conversion for almost as long as it has been revered for its microphone preamps, and The Clarett 8PreX isn’t an exception. Featuring the latest in Focusrite precision digital conversion, 8PreX’s 192kHz/24-bit converters dispense up to 118dB (A/D from mic pre) / 119dB (D/A line out) real world dynamic range.

The eight primary inputs sit on the front panel in the form of mic/instrument/line combo XLR/TRS sockets and include the innovatively reimagined Clarett mic pres; in addition, an ADAT optical input can be activated to widen the 8PreX’s input capability with eight additional digital channels. The instrument-level inputs are designed with exceptional headroom, to accept the highest output pickup without distortion.

The heart of the studio

Specially designed for studio installation, Clarett 8PreX includes separate rear panel inputs for mic, line and instrument, as well as ADAT I/O to add 16 more channels, dedicated phantom power, phase reverse and high pass filters on every channel.


Eight New Clarett Mic Pres with extra ‘Air’

The mic pres have been designed especially for the Clarett range, with plenty of gain, yet low noise and distortion. In addition, they feature a special “Air” feature that switches in an analogue model of the classic transformer-based Focusrite ISA mic pre. Instrument inputs feature extra headroom to handle the loudest pickup.


Use DAW plugins in real time

Latency is the delay to a signal as it passes through your DAW system from interface input to interface output. Clarett Thunderbolt offers the world’s shortest. Signals go round so fast that you can record and monitor through your DAW with plugins such as EQ or compression.


Precision digital conversion

Clarett features Focusrite’s class-leading conversion quality: with up to 119dB dynamic range, Clarett offers the cleanest way yet to get music in and out of your DAW.


Exceptional I/O capability

26 audio inputs and 28 outputs within a 2U rack space, including 8 analogue inputs, 10 analogue outputs, stereo S/PDIF I/O and 16 channels of ADAT I/O. Connect up to 16 more mic preamps over ADAT for a 24 channel microphone setup.


Accessible metering and monitoring

Central panel provides analogue and digital input levels, and main monitor outputs, via a 6-segment, multichannel hardware meter. Accessible monitor features include a large-diameter level control, plus dim and mute buttons.


Dual high-power headphone outputs

Two wide dynamic range headphone outputs powerful enough to deliver plenty of level even on high impedance headphones – perfect for tracking and mixing.


Software Mixer for maximum control

Focusrite Control is a brand new software mixer designed for easy configuration of monitoring and routing setups. Simple and intuitive to use, Focusrite Control offers a traditional mixer workflow and allows immediate access to internal hardware functions.


Digital sync on-board

Includes Word Clock I/O, enabling it to act as master for clocking multiple digital devices, or sync to word clock from an external digital device.


Classic processor plugins included

Every Clarett includes the Red 2 & Red 3 AAX, AU & VST Plug-in Suite, which accurately models Focusrite’s classic Red range equalizer and compressor hardware

More Information

Supported Sample Rates

  • 44.1 kHz
  • 48 kHz
  • 88.2 kHz
  • 96 kHz
  • 176.4 kHz
  • 192 kHz


Microphone Inputs

  • Frequency Response: 20 Hz - 20 kHz +/-0.1 dB
  • Dynamic Range: 118 dB (A-weighted)
  • THD+N: 0.001%
  • Noise EIN: –128 dBu (A-Weighted)
  • Maximum input level: +18 dBu
  • Gain Range: 57dB


Line Inputs

  • Frequency Response: 20 Hz - 20 kHz +/-0.1 dB
  • Dynamic Range: 116 dB (A-weighted)
  • THD+N: 0.005%
  • Maximum input level: +26dBu
  • Gain Range: 57dB


Instrument Inputs

  • Frequency Response: 20 Hz – 20 kHz ± 0.1 dB
  • Dynamic Range: 111 dB (A-weighted)
  • THD+N: 0.001%
  • Maximum input level: +14dBu
  • Gain Range: 57dB


Line & Monitor Outputs

  • Dynamic Range (Line Outputs): 119dB
  • Dynamic Range (Monitor Outputs): 117dB
  • Maximum Output Level (0 dBFS): +18 dBu
  • THD+N: 0.0007%


Headphone Outputs

  • Dynamic Range: 112dB
  • THD+N: 0.0008%
  • Maximum Output Level: +16dBu


OS Compatibility Checker

macOS Sierra - Yes
There is a known issue with 5k Retina iMacs (model 17,1), please see this article

Mac 10.11 - Yes
There is a known issue with 5k Retina iMacs (model 17,1), please see this article

Mac 10.10 - Yes
Mac 10.9 - Yes
Mac 10.8 - No
Windows 10 AU (Redstone) - Yes
Supported with Thunderbolt 1 or Thunderbolt 2 connections. Thunderbolt 3 is not yet supported, please see this article.

Windows 10 - Yes
Supported with Thunderbolt 1 or Thunderbolt 2 connections. Thunderbolt 3 is not yet supported, please see this article.

Windows 8.1 - Yes
Supported with Thunderbolt 1 or Thunderbolt 2 connections. Thunderbolt 3 is not yet supported, please see this article.

Windows 7 - No
Windows 7 is not supported or tested, though it may still work.

For the most up to date information on Clarett & Windows, click here


Clarett 8PreX Included Software

  • Red 2 & Red 3 AAX, AU & VST Plug-in Suite
  • 1 GB of Loopmasters sounds and samples
  • Focusrite Control (DSP Mixer)



  • 5.23kg (With accessories)



  • 8.7cm x 48.0cm x 27.0cm (H x W x D)
  • Clarett 8PreX
  • Getting Started Guide (Including serial number and bundle code for registering and accessing free software)
  • Power Cable