Focusrite OctoPre MKII DYNAMIC

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). Provide 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)