Focusrite Clarett 4Pre Thunderbolt Audio Interface with 4 Microphone Preamps

18 x 8 Thunderbolt interface with four Clarett preamps

Focusrite's compact 18-in, 8-out Clarett 4Pre Thunderbolt audio interface includes four mic preamps, class-leading digital conversion and astonishing low latency that simplifies your workflow and lets you use plug-ins in real time. Clarett's new mic pre offers extra-low noise and distortion, plus the switchable analogue 'Air' effect that emulates the sound of Focusrite's renowned ISA 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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£629.00 £524.17
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Focusrite’s Clarett 4Pre Thunderbolt interface is the best interface in its class, bar none. With 18 inputs and eight outputs, it delivers four 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 4Pre 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 4Pre isn’t an exception. Featuring the latest in Focusrite precision digital conversion, 4Pre’s 192kHz/24-bit converters dispense up to 118dB (A/D from mic pre) / 119dB (D/A line out) real world dynamic range.

The four 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 4Pre’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.

Compact yet versatile

18 inputs and eight outputs in a desktop format characterise the Clarett 4Pre, with four analogue inputs and two stereo headphone outputs on the front panel, alongside a host of connectivity on the rear, including an ADAT input for the addition of eight more inputs from, for example, a digital mic pre.

Plug straight in

Four universal mic/line/instrument inputs on the front panel ensure immediate access to the four primary analogue inputs. The newly designed DI’s on Clarett 4Pre allow for even the hottest of guitar pick-ups and deliver a sonic performance that outstrips many dedicated DI’s.

Revolutionise your work flow

Clarett Thunderbolt offers astonishingly low round-trip latency (1.38ms*), simplifying your recording and monitoring workflow, and allowing you to use plug-ins in real-time.

Four 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. They feature a switchable “Air” effect – an analogue model of Focusrite’s renowned ISA transformer-based preamps. The Instrument inputs feature extra headroom to handle the loudest pickup.

Line level inputs for synths and more

Four dedicated line level TRS jack inputs are provided on the rear panel, along with four line outputs, S/PDIF I/O and eight channels of ADAT in.

Precision digital conversion

Clarett features Focusrite’s class-leading precision 24/192 conversion. With up to 119dB dynamic range, Clarett offers the cleanest way yet to get music in and out of your DAW.

‘Gain Halo’ Metering

Focusrite's unique ‘gain halo’ metering provides clear ‘go/no-go’ indication of levels to avoid clipping. Gain controls have been optimised for smoother, more natural adjustment.

Dual high-power headphone outputs

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

Software Mixer for maximum control – Focusrite Control is a brand new software mixer designed with a traditional mixer workflow for easy configuration of monitoring and routing setups. Simple and intuitive to use, Focusrite Control also allows immediate access to internal hardware functions.

Classic processor plugins included

Every Clarett includes Softube’s Time and Tone Bundle, with TSAR-1R Reverb, Tube Delay, Saturation Knob and Multi-band compressor, as well as the Focusrite Red 2 & Red 3 Plug-in Suite.

More Information
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

Single Hardware Unit Weight

  • 1.57kg (with accessories)
  • 1.35kg (without accessories)


  • 6.4cm x 22.2cm x 19.2cm (H x W x D)

Single Boxed Unit Weight

  • 2.51kg


  • 13.2cm  x 29.0cm x 28.5cm (H x W x D)
  • Clarett 4Pre
  • Getting Started Guide (Including serial number and bundle code for registering and accessing free software)
  • Power Cable