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Focusrite OctoPre MkII Dynamic Microphone Preamp

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Product Description

Featuring eight channels of Focusrite microphone pre-amplification, the OctoPre MkII Dynamic offers eight VCA-based Red 3-derived compressors with built-in 24-bit/96kHz digital inputs/outputs and built-in compression. As a feature-rich expansion upgrade for any digital audio workstation, the OctoPre MKII is 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.

Focusrite OctoPre MkII Dynamic Features

  • Eight award-winning Focusrite pre-amps
  • Eight single-dial Focusrite Compressors
  • Compress transparently or with effect
  • Built-in eight channel 24-bit / 96 kHz digital outputs
  • Built-in eight channel 24-bit / 96 kHz digital inputs
  • State-of-the-art Clocking Solutions
  • Two high-quality instrument inputs
Eight award-winning Focusrite pre-amps
Focusrite's unparalleled pre-amp legacy forms the foundation of this new device, with pre-amps 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/96kHz 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.

Additional Features
  • 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
  • Internal clocking, master clocking and external clocking via BNC or ADAT

Product Specifications
Focusrite OctoPre MKII Dynamic Microphone Preamp Specifications

Conversion
  • 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 provides superb jitter reduction for class leading converter performance.

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)

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

Analogue Inputs
  • Mic / Line inputs: XLR Combo
    • Auto-switching between Mic (XLR) and Line / Instrument (TRS)
  • Mic / Line / Instrument 1 and 2: 2 x XLR Combo on rear panel
  • Mic / Line 3-8: 6 x XLR Combo
  • Instrument: As above, switched to Instrument (inputs 1 and 2 only)
Analogue Outputs
  • Line level: 8 x 1/4 inch TRS Jack
  • Nominal output level: 0dBFS = 16dBu, balanced
Switching to enable monitoring of A/D inputs or ADAT inputs with ADDA switch.

Digital I/O
  • ADAT Out 1 and 2: 8 channels (44.1 / 48kHz)
    • 4 channels S-MUX (88.2 / 96kHz, 8 channels total).
  • ADAT In 1 and 2: 8 channels (44.1 / 48kHz, ADAT 1 only)
    • 4 channels S-MUX (88.2 / 96kHz, 8 channels total).
Gain and Levels
  • Mic Gain: +10dB to + 55dB.
  • Line 1-8 Gain: -10dB to +36dB.
  • Instrument Gain: +10dB to +55dB.
  • Phantom Power: Switched in 4 channel groups on Mic. 1-4 and 5-8.
  • Mic and instrument maximum input level: +16dBu.
  • Line maximum input level: +26dBu
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: < 0.18%
    • Maximum at any compression threshold, input < +16dBu, gain at minimum
Clock Sources:
  1. Internal clock
  2. Sync to Word Clock Input.
  3. Sync to ADAT Input (ADAT 1 input only)
Front Panel Indicators
  • Metering of analog inputs (channels 1-8): 5 segment (-42, -18, -6, -3 and 0dBFS)
  • 4 Sample Rate LEDs: 44.1k, 48k, 88.2k and 96k
  • 3 Sync Source LEDs: Internal, Word Clock and ADAT
  • Lock Indicator: LED
  • ADDA Switch: A/D’s or ADAT inputs
    • For analogue output source selection
Dimensions and Weight:
  • Dimensions (WxHxD): 19 x 1.8 x 10.4 inches (484 x 45 x 265 mm)
  • Weight: 7.3 lbs (3.6 kg)


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