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Focusrite OctoPre MkII Specifications

  • Mic Input: Frequency Response

    20Hz - 20kHz +/- 0.1 dB.

  • Mic Input: THD+N

    0.001% (measured at 1kHz with a 20Hz/22kHz bandpass filter).

  • Mic Input: Noise

    EIN > 125dB (128dB analogue to digital): measured at -60dB of gain with 150 Ohms termination (20Hz/22kHz bandpass filter)

  • Mic Gain

    +10dB to + 55 dB

  • Mic Input: Phantom power

    Switched in 4 channel groups on Mic. 1-4 and 5-8

  • Mic Input: Maximum input level

    +16dBu

  • Line Input: Frequency Response

    20Hz - 20kHz +/- 0.1dB.

  • Line Input: THD+N

    < 0.001% (measured with 0dBFS input and 22Hz/22kHz bandpass filter)

  • Line Input: Noise

    -90dBu (22Hz/22kHz bandpass filter)

  • Line Input: Line 1-8 Gain

    -10 dB to +36 dB

  • Line Input: Line maximum input level

    +26dBu

  • Instrument Input: Frequency Response

    20Hz - 20kHz +/- 0.1dB.

  • Instrument Input: THD+N

    0.004% (measured with 0dBu input and 20Hz/22kHz bandpass filter)

  • Instrument Input: Noise

    -87dBu (20Hz/22kHz bandpass filter)

  • Instrument Input: Line 1-8 Gain

    +10dB to +55dB

  • Instrument Input: Line max input level

    +16dBu

  • Analogue Output: Frequency Response

    20Hz - 20kHz +/- 0.2dB.

  • Analogue Output: THD+N

    < 0.0010% (-100dB) (measured with 0dBFS input 22Hz/22kHz bandpass filter, un-weighted).

  • Analogue Output: Nominal output level

    16 dBu, balanced at 0dBFS

  • Compression Threshold Range

    -44dBFS (Max setting) to -4dBFS (Min setting)

  • Compression Ratio Normal

    2:1, More: 4:1

  • Compression Auto Make Up Gain

    4dB (Min setting), 18dB (Max setting)

  • Compression Attack Time

    1.2ms, Release Time: 28ms (-3.5dB method)

  • Compression Curve

    Classic Focusrite Soft Knee

  • Compression THD+N

    < 0.18% (maximum at any compression threshold, input < +16dBu, gain at minimum)

  • 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)

  • 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 Input

    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)

  • Digital Output

    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)

  • 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)

  • Dimensions (W x H x D)

    484 x 45 x 265mm / 19.05 x 1.77 x 10.43"

  • Weight

    3.6kg / 7.93lbs

About Focusrite OctoPre MkII Dynamic 8-channel Microphone Preamplifier - SKU#1916663

With eight channels of Focusrite microphone Pre-amplification, 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.

Eight award-winning Focusrite preamps
Focusrite's unparalleled preamp legacy forms the foundation of this new device, with preamps optimized to handle extreme levels from sound sources like acoustic drums.

Eight 'single-dial' Focusrite compressors
A single dial gets you to the right amount of compression, fast. These new VCA-based, feed-forward compressors model the character of the celebrated Focusrite Red 3.

Compress transparently or with effect
The classic soft-knee design achieves beautifully transparent compression that caresses your sound. Focusrite's unique "More" switch doubles the ratio to deliver 'compression with effect'.

Built-in eight-channel 24-bit / 96kHz digital outputs
Make the most of your interface's ADAT input for tracking, with eight channels of analogue to digital conversion via ADAT, boasting a 'real world' dynamic range performance of 110dB.

Built-in eight channel 24-bit / 96 kHz digital inputs
Switchable from the front panel, digital to analogue conversion via ADAT provides analogue monitoring of any digital ADAT feed, as well as the ability to clock from any ADAT device.

State-of-the-art clocking solutions
OctoPre MkII Dynamic's internal clock delivers a jitter performance of +/- 20 PPM. For external clocks, industry-standard JetPLL jitter elimination technology is employed.

Two high-quality instrument inputs
OctoPre MkII Dynamic's first two channels feature DI's, ready for you to plug in your guitars and bass. No expensive external DI required. · Input clip and Compression active LEDs on every channel
· 5 LED input metering on every channel
· Phantom power available on every channel (switched in two groups: 1-4 and 5-8)
· 24-bit resolution, 44.1, 48, 88.2 and 96kHz sampling rates.

What's in the box:

  • Focusrite OctoPre MkII Dynamic 8-channel Mic Preamplifier with ADAT I/O and Built-in Compression