Focusrite Octopre mk2 Dynamic

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).

INSTRUMENT

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

ANALOGUE OUTPUTS

Line level 8 x 1/4” TRS Jack.
Nominal output level 0dBFS = 16dBu, balanced.
Frequency response: 20Hz – 20kHz +/- 0.2dB.
THD+N < 0.0010% (-100dB) (measured with 0dBFS input 22Hz/22kHz bandpass filter, un-weighted).
Switching to enable monitoring of A/D inputs or ADAT inputs with ADDA switch.

DIGITAL I/O

ADAT Out 1 & 2: 8 channels (44.1 / 48kHz), 4 channels SMUX (88.2 / 96kHz, 8 channels total).
ADAT In 1 & 2: 8 channels (44.1 / 48kHz, ADAT 1 only), 4 channels SMUX (88.2 / 96kHz, 8 channels total).

POWER

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).
3 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).

WEIGHT and DIMS