Focusrite OctoPre MkII 8-Channel Microphone Preamp

With eight channels of Focusrite pre-amplification and a built-in 24-bit / 96 kHz ADAT output, OctoPre MkII is Focusrite's powerful input upgrade for your Pro Tools system, or any digital audio workstation. It's also a great expansion for any analogue or digital console, or hard disk recorder.

The digital output allows users to make the most of often-neglected ADAT inputs; ideal for expanding the number of mic-pre inputs on your interface. Connect OctoPre MkII to your audio interface's ADAT input to create a high quality, multi-channel recording solution, ideal for tracking drums, as well guitars, keyboards, vocals and more.

Eight High Quality Award-winning Focusrite Pre-amps
The best sounding multi-channel mic-pre in its class.

Built-in eight channel 24-bit / 96 kHz digital output
Make the most of your interfaces ADAT input. OctoPre connects via its built-in lightpipe output, with a real world dynamic range performance of 110dB.

Mic-pres optimised for tracking drums
OctoPre MkII is designed not to clip, with pre-amps optimised to handle extreme levels from sound sources like kick drum and snare.

Two quality Hi-Z instrument inputs
OctoPre MkIIs first two channels feature DIs, ready for you to plug in your Guitars and Bass, instantly accessible on the front fascia.

5 LED input metering on every channel
OctoPre MkIIs fast-acting 5-LED input meters provide clear reference of input levels, helping you to avoid analogue or digital clipping.

-10dB Pads on every channel
OctoPre MkII is drum-ready, with 10dB pads to stop hot signals from overdriving the microphone pre-amp.

Direct outputs on every channel
For routing and flexibility, especially in the live environment. Each mic-pre can be routed to the mixers analogue channels, with two mirrored ADAT outputs (44.1) left free to send to digital recorders.

48V Phantom power available on every channel
Switched in two groups (1-4 and 5-8) every channel is capable of supplying phantom power, for use with most condenser microphones.

State-of-the-art Clocking Solutions
OctoPre MkII's internal clock delivers a jitter performance of < 10 PPM. For external clocks, a BNC connector is provided and industry-standard JetPLL jitter elimination technology is employed.

Technical Info

Specifications

Digital:
- A/D Dynamic Range 110dB 'A-weighted' (all inputs).
- JetPLL(TM) Technology providing superb jitter reduction for class leading converter performance.
- Clock Jitter < 250 pico seconds.
- Sample Rate Clock Accuracy: +/- 20PPM.

Analogue:
Microphone Input:
- Frequency Response: 20Hz - 20kHz +/- 0.1 dB.
- THD+N: 0.001% (measured at 1kHz with a 20Hz/22kHz bandpass filter).
- Noise: EIN > 125dB (128dB analogue to digital): measured at ~60dB of gain with 150 Ohm termination (20Hz/22kHz bandpass filter).

Line input:
- Frequency Response: 20Hz - 20kHz +/- 0.1dB.
- THD+N: < 0.001% (measured with 0dBFS input and 22Hz/22kHz bandpass filter).
- Noise: -90dBu (22Hz/22kHz bandpass filter).

Instrument:
- Frequency Response: 20Hz - 20kHz +/- 0.1dB.
- THD+N: 0.004% (measured with 0dBu input and 20Hz/22kHz bandpass filter).
- Noise: -87dBu (20Hz/22kHz bandpass filter).

Analogue Output:
- Frequency Response: 20Hz - 20kHz +/- 0.2dB.
- THD+N < 0.0010% (-100dB) (measured with 0dBFS input 22Hz/22kHz bandpass filter, un-weighted).

Mic Gain: +10dB to + 55 dB
- Line 1-8 Gain: -10 dB to +36 dB
- Instrument Gain: +10 dB to +55 dB
- Input Pad on inputs 1-8: ~-10 dB

- Phantom power switched in 2 x 4 channel groups (1-4 and 5-8)

- Mic and instrument maximum input level: +8 dBu (+17 dBu with pad on input)
- Line maximum input level: +22 dBu
- Nominal output level @ 0dBFS: 16 dBu, balanced

- Sample rates: 44.1kHz to 96kHz.

- Clock Sources: Internal clock and sync'ing to Word Clock Input.

- Dimensions (W x H x D): 484mm / 19 in., 45mm / 1.8 in., 265mm / 10.4 in.
- Weight: 3.6 kg / 7.93 lbs.