Focusrite Clarett OctoPre

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Quick Overview

8-channel 24-bit/192 kHz AD/DA with eight preamps and eight line outputs expanding computer audio interfaces via ADAT I/O
Focusrite Clarett OctoPre
Focusrite Clarett OctoPre Focusrite Clarett OctoPre Focusrite Clarett OctoPre


The Focusrite Clarett OctoPre provides eight specially-designed Clarett mic pres and 24-bit, 192 kHz AD/DA conversion that can be used to extend the capabilities of a Clarett interface – or any other interface fitted with ADAT optical inputs and outputs. In addition to the mic preamps there are eight channels of D-A conversion providing eight analog outputs.

The eight mic preamps feature automatic mic/line switching inputs and two front-panel instrument inputs. Designed specifically for the Clarett range, they offer plenty of gain, yet low noise and distortion - and great sound quality. They also include a special 'Air' feature that switches in an analog model of the classic transformer-based Focusrite ISA mic pre, switching the impedance of the preamp to that of the original ISA and enabling a transformer resonance effect, giving microphone sources the air and clarity of an ISA transformer-based mic pre-recording. In addition, the mic preamps have plenty of headroom and are ideal for recording drums and other extreme level sources.

The front panel instrument inputs feature extra headroom to handle high-output pickups, while the rear panel includes universal XLR/jack connectors for the remaining auto-switching mic/line inputs. In addition, each input has its own switched insertion point for single-cable connection of compression, equalization and other outboard analog processing - with hard-wired relay bypass, so you can leave outboard gear or a patchbay connected ready to access at the press of a button. The inputs drive eight channels of precision 24-bit Focusrite A-D with 118 dB dynamic range and standard sample rates up to 192 kHz.

In addition to providing eight mic preamps, the Clarett OctoPre offers DA conversion (from the ADAT inputs, with 119 dB dynamic range) of up to eight channels, making it perfect for mixing as well as tracking. The outputs appear on a 25-pin DSUB connector with standard wiring. The line outputs can optionally provide line level output feeds from the mic pres – useful for feeding a live console, for example, while recording the digital outputs. Aside from the insert point, the Clarett OctoPre is balanced end-to-end for maximum noise immunity.


  • 8-channel I/O mic/line expansion with ADAT interfacing
  • Eight Clarett-style mic preamps with 'Air' transformer emulation effect
  • Eight line outputs fed from DA or mic preamps
  • 24-bit AD and DA up to 192 kHz sample rate - ideal for hi-res audio
  • Dual-port ADAT I/O - eight channels at up to 96 kHz, four channels at 176.4/192 kHz
  • Switched insert with true bypass on every channel
  • Mic preamps and front panel instrument inputs with extra headroom
  • Six-segment LED metering and channel clip indicators
  • 48 V phantom power to all inputs
  • Word clock I/O and JetPLL jitter elimination

Additional Information

Condition New
Package Contents Includes start guide and power cable
Width 19 in
Depth N/A
Height N/A
Unit Weight N/A
Chassis 19-in Rackmount
Rack Spaces N/A
Channels No
Key Type No
Number of Keys No
Number of Inputs N/A
Digital Inputs 8
Analog Inputs 8
Input Connectors XLR Combo, 1/4 in. TRS, Optical, BNC
Number of Outputs N/A
Digital Outputs 8
Analog Outputs 8
Output Connectors Analog DB25, Optical, BNC
Computer Connection N/A
Number of Preamps 8
MIDI Connections N/A
Clock I/O In, Out
Maximum Sampling Rate 192 kHz
Digital Format ADAT
Finish No

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