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Focusrite OctoPre MkII Microphone Preamp

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Product Description

The Focusrite OctoPre MkII features eight channels of Focusrite pre-amplification and a built-in 24-bit / 96 kHz ADAT output. Upgrade your Pro Tools system or any digital audio workstation with the powerful OctoPre MkII microphone preamp. 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 microphone preamp 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.

Focusrite OctoPre MkII Mic Preamp Features

  • 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 interface’s 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 MkII’s first two channels feature DI’s, ready for you to plug in your Guitars and Bass, instantly accessible on the front fascia.
  • 5 LED input metering on every channel
    OctoPre MkII’s 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 mixer’s 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.
The Focusrite Pre
Focusrite has, over the past two decades, built a reputation as the market leader for high quality recording equipment, with its mic-pre technology as the cornerstone of that enviable reputation. The original mic-pre, as featured in the early Focusrite Forte console, used rotary switched gain controls and high quality audio transformers. This mic-pre is still used by many of the industries greatest producers and has contributed to the sound of countless hit records. Today, Focusrite design equipment for a far greater audience, from professionals to amateur enthusiasts, all with varying budgets.

As with the Red and ISA ranges, the Mic-pre technology found in the OctoPre MkII is designed to the highest possible standards. They uphold the same wide bandwidth philosophy featured in the original forté console, back in 1989. All Focusrite mic-pres feature custom components which have undergone an intense testing and qualification process. With the facts and figures in, Focusrite designs then have to pass the essential listening stage. Any design can measure well on the test bench but only a great design can be qualified in the studio. The FET-based design in the OctoPre MkII is no exception and ensures the same low noise and distortion performance as earlier transformer-based designs. It delivers clarity without colouration and exhibits the signature transparency for which Focusrite have become famous.

Product Specifications
Focusrite OctoPre MkII Mic Preamp Specifications
Connectivity
    Inputs
    • 2 mic/line/Inst Combi XLR Switch to instrument via front panel
    • 6 mic/line Combi XLR On the rear
    Outputs
    • 8 Analogue line 1/4 inch 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 inch 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 LED’s (44.1k, 48k, 88.2k & 96k)
    • 2 Sync Source LED’s (Internal, Word Clock)
    • Lock Indicator LED
    Dimensions and Weight
    • Width x Height x Depth: 484 mm / 19 inches, 45 mm / 1.8 inches, 265 mm / 10.4 inches
    • Weight: 3.6 kg / 7.93 lbs
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
    Microphone Inputs
    • 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 with 60dB of gain with 150 Ohm termination (20Hz/22kHz bandpass filter)
    Line Inputs
    • Frequency Response: 20Hz - 20kHz +/- 0.1dB
    • THD+N (A-Weighted): < 0.001% (measured with 0dBFS input and 22Hz/22kHz bandpass filter)
    • Noise: -90dBu (22Hz/22kHz bandpass filter)
    Instrument Inputs
    • Frequency Response 20Hz-20KHz +/- 0.1 dB
    • 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 +/- 0.2 dB
    • 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 syncing to Word Clock Input


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