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Focusrite OctoPre MkII Dynamic

With eight channels of Focusrite microphone preamplification, eight VCA-based Red 3-derived compressors and built-in 24-bit / 96kHz digital inputs and outputs, OctoPre MkII Dynamic is Focusrite’s feature-rich expansion upgrade for any digital audio workstation. It’s equally an ideal expansion for any analogue or digital console, or hard disk recorder.

Digital inputs and outputs let you make the most of often-neglected ADAT I/O; ideal for expanding the number of mic pre inputs on your interface or for providing analogue monitoring from any digital ADAT feed.

With this entire package fitting into a single 1U chassis complementing Focusrite’s Saffire PRO range, and all controls adjustable from the front fascia, OctoPre MkII Dynamic sets the standard for modern, compact, multi-channel recording expansions.

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Focusrite OctoPre MkII Dynamic

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Focusrite OctoPre MkII Dynamic

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Product: Focu-octopremkiidynamic

With eight channels of Focusrite microphone preamplification, eight VCA-based Red 3-derived compressors and built-in 24-bit / 96kHz digital inputs and outputs, OctoPre MkII Dynamic is Focusrite’s feature-rich expansion upgrade for any digital audio workstation. It’s equally an ideal expansion for any analogue or digital console, or hard disk recorder.

Digital inputs and outputs let you make the most of often-neglected ADAT I/O; ideal for expanding the number of mic pre inputs on your interface or for providing analogue monitoring from any digital ADAT feed.

With this entire package fitting into a single 1U chassis complementing Focusrite’s Saffire PRO range, and all controls adjustable from the front fascia, OctoPre MkII Dynamic sets the standard for modern, compact, multi-channel recording expansions.


Mic 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)
Mic Gain:+10dB to + 55dB
Phantom power switched in 4 channel groups on Mic:1-4 and 5-8
Maximum input level +16dBu

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)
Line 1-8 Gain:-10dB to +36dB
Maximum input level +26dBu

Instrument Input

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)
Instrument Gain:+10dB to +55dB
Maximum input level +16dBu

Analogue Output

Frequency Response:20Hz – 20kHz +/- 0.2dB.
THD+N <0.0010% (-100dB) (measured with 0dBFS input 22Hz/22kHz bandpass filter, un-weighted)
Nominal output level 0dBFS = 16dBu, balanced

Compression

Threshold Range:-44dBFS (Max setting) to -4dBFS (Min setting)
Compression Ratio Normal:2:1, More: 4:1
Auto Make Up Gain:4dB (Min setting), 18dB (Max setting)
Attack Time:1.2ms, Release Time: 28ms (-3.5dB method)
Compression Curve:Classic Focusrite Soft Knee
THD+N (maximum at any compression threshold, input < +16dBu, gain at minimum):< 0.18%

Digital

A/D Dynamic Range 110dB ‘A-weighted’ (all inputs)
D/A Dynamic Range 110dB ‘A-weighted’ (all outputs)
Clock Jitter < 250 pico seconds
Sample rates: 44.1kHz to 96kHz
Sample Rate Clock Accuracy: +/- 20PPM
JetPLL technology providing superb jitter reduction for class leading converter performance
Clock sources: Internal, Word Clock and ADAT (from ADAT1 input only)

Weight

Single unit unboxed net weight:3.6 kg / 7.3 lbs
Single unit boxed net weight:4.05 kg / 8.9 lbs

Dimensions

Unboxed:W = 484mm / 19”, H = 45mm / 1.8”, D = 265mm / 10.4”
Boxed:W= 595 mm / 23.5”, H= 120 mm / 4.75”, D= 340 mm / 13.4”

Analogue Channel Inputs

2x Mic / Line / Instrument inputs on the rear panel (Inputs 1 and 2). Switches automatically between Mic (XLR) and Line (TRS). Instrument selected via front panel buttons.
6x Mic / Line inputs on the rear panel. Switches automatically between Mic (XLR) and Line (TRS).

Analogue Channel Outputs

8x Balanced 1/4" TRS Jack on the rear panel
Switching to enable monitoring of A/D inputs or ADAT inputs with ADDA switch on front panel.

Digital I/O

2x ADAT Lightpipe (TOSLINK) inputs. Provides 8 channels at 44.1 and 48kHz (please note that in this mode, only ADAT input 1 is active, allowing for a total of 8 ADAT input channels at 44.1 / 48kHz). Provide 4 channels per port (8 total) at 88.2 and 96kHz (S-MUX).
2x ADAT Lightpipe (TOSLINK) outputs. Provides 8 channels per port (16 total) at 44.1 and 48kHz (please note that in this mode, the digital outputs are mirrored, providing outputs 1 - 8 on both ports). Provides 4 channels per port (8 total) at 88.2 and 96kHz (S-MUX).
Word-Clock in and out on rear panel BNC connectors

Front Panel Indicators

8x Five segment input LED meters (-42, -18, -6, -3 and 0dBFS)
4x Sample Rate LED's (44.1k, 48k, 88.2k and 96k)
3x Sync Source LED's (Internal, Word Clock and ADAT)
Lock' indicator LED
ADDA Switch for analogue output source selection (A/D’s or ADAT inputs)
  • Includes the Focusrite OctoPre MkII Dynamic and all items packaged with it by the manufacturer.

Focusrite OctoPre MkII Dynamic: An interview with the designer

Focusrite // OctoPre MkII Dynamic: Recording Strings with James Stone and fiN

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