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Focusrite

OCTOPRE-MKII

With eight channels of Focusrite pre-amplification and a built-in 24-bit / 96 kHz ADAT output, OctoPre MkII is Focusrites powerful input upgrade for your Pro Tools system, or any digital audio workstation. Its 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 interfaces ADAT input to create a high quality, multi-channel recording solution, ideal for tracking drums, as well guitars, keyboards, vocals and more.

Key Features:

Connectivity

CHANNELS AT A GLANCE

IN
No. Format Connector Details
2 mic/line/Inst Combi XLR Switch to instrument via front panel
6 mic/line Combi XLR On the rear.

OUT
No. Format Connector Details
8 Analogue line 1/4" TRS Jack Balanced
16 ADAT Dual lightpipe 8 channels at 96kHz
(Lightpipes are mirrored at 48kHz)

Analogue inputs

Mic / Line inputs on XLR Combo with auto-switching between Mic (XLR) and Line (TRS)
Mic / Line / Instrument on Channels 1 & 2: 2 x XLR Combos on front panel
Mic / Line 3-8: 6 x XLR Combo on rear.
Instrument: As above, switched to Instrument (inputs 1 & 2 only)

Analogue Outputs

Line level 8 x 1/4??æ TRS Jack.

Digital I/O

ADAT Out 1 & 2: 8 channels (44.1 / 48kHz, 16 channels total); 4 channels S-MUX (88.2 / 96kHz, 8 channels total)
Running at 44.1/48kHz will ultimately provide the user with 2 sets of 8 outputs (mirrored)

Power

Internal Universal Input PSU.

Front Panel Indicators

Metering of analogue inputs (channels 1-8), 5 segment (-42, -18, -6, -3 and 0dBFS).
4 Sample Rate LEDs (44.1k, 48k, 88.2k & 96k).
2 Sync Source LEDs (Internal, Word Clock).
??áLock Indicator LED.

Performance

Digital:

A/D Dynamic Range 110dB 'A-weighted' (all inputs).
JetPLL 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).

Specifications

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 = 484mm / 19??æ, H = 45mm / 1.8??æ, D = 265mm / 10.4??æ
Weight: 3.6 kg / 7.93

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