Specifications - Focusrite OctoPre MkII Dynamic Mode D'emploi

Performance Specifications
MIC
• Frequency response: 20Hz - 20kHz +/- 0.1 dB.
• Maximum input level (Gain at Minimum): +16dBu.
• 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
• 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
• 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).
DIGITAL PERFORMANCE
• Clock sources:
Internal clock.
Sync to word clock Input.
Sync to ADAT Input (ADAT 1 input only).
• A/D dynamic range 110dB 'A-weighted' (all inputs).
• D/A dynamic range 110dB 'A-weighted' (all outputs).
• JetPLLTM PLL technology providing superb jitter reduction for class leading converter performance.
Clock jitter < 250 pico seconds.
•
• Sample rates: 44.1kHz to 96kHz.
• Sample rate clock accuracy: +/-20PPM.
ANALOGUE INPUTS
• Mic / line inputs on XLR combo with auto-switching between mic (XLR) and line / instrument (TRS).
• Mic / line / instrument 1 & 2: 2 x XLR Combo on rear panel.
• Mic / line 3-8: 6 x XLR combo.
• Instrument: As above, switched to instrument (inputs 1 & 2 only).
• 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.
COMPRESSORS
• 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%
•
13