Front Panel
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Instrument inputs 1&2:
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Two 6.3mm mono jack sockets, auto-select to analog inputs 1&2 when plugged
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Headphone outputs 1&2:
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Two 6.3mm stereo jack sockets, each with illuminated volume control
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Master volume control:
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Assignable to any selection of outputs, with LED halo indication
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Level meters:
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Multi-segment, multi-color bargraphs with overload indication; eight for analog, two for digital, assignable to inputs or outputs
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Input selector indicators:
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Indicate modes of analog inputs 1-4 as mic/line/instrument; plus phantom power indicator for mic mode
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Overkiller-active indicators:
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For every analog input, lit when Overkiller limiters are acting
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Digital input indicators:
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Input unlocked, and SRC (sample-rate converter) selected
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Digital output indicator:
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SRC (sample-rate converter) selected
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Sync indicator:
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Master, lit when interface is providing system sync
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Standby button:
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With standby indicator (also flashes when unit is in 'identify' mode)
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Rear Panel
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Mic/Line inputs 1-4:
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Four combo connectors with XLR sockets for mic input and 6.3mm TRS jack sockets for line input (balanced or unbalanced)
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Line inputs 5-8:
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Four 6.3mm TRS jack sockets (balanced or unbalanced)
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Line outputs 1-8:
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Eight 6.3mm TRS jack sockets (balanced or unbalanced)
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Digital inputs:
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RCA socket for S/PDIF in, TOSlink for S/PDIF or ADAT in; (RCA can operate as AES3 input using XLR-RCA adapter supplied)
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Digital outputs:
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RCA socket for S/PDIF out, TOSlink for S/PDIFor ADAT out; (RCA can operate as AES3 output using RCA-XLR adapter supplied)
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MIDI I/O:
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Two 5-pin DIN sockets, in and out
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Wordclock I/O:
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Two BNC sockets, output and input (75R)
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FireWire ports:
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Two IEEE1394A ports (allowing cascading of multiple units)
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Mains power:
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3-pin 6A IEC inlet
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Software Support
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Mac OS support:
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OS X 10.3 or later, PPC or Intel platform
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Windows OS support:
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Windows XP, Vista or later
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Mac audio driver:
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Core Audio device
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Windows audio driver:
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WDM and ASIO devices
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Control Panel applet:
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Graphical user interface for control of single or multiple Orpheus units under Mac OS X or Windows
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Analog Line Inputs
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Configuration:
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Electronically balanced, with fully-balanced analog signal path
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Input sensitivity:
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Switchable ‘+4dBu’ (0dBFS=+18dBu) or ‘-10dBV’ (0dBFS=+6dBu)
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Input impedance:
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14.5kR
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Unbalanced mode:
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Automatic
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Total harmonic distortion:
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-117dB (0.00014%, -0.1dBFS)
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THD+n:
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-111dB (0.00028%, -0.1dBFS)
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Dynamic range:
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116dB (-60dBFS)
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Gain accuracy:
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±0.05dB
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LF roll-off:
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-0.05dB at 8Hz; -3dB at <1Hz
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HF roll-off:
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fs=44.1kHz: -0.05dB at 21.1kHz; -3dB at 22.0kHz
fs=48kHz: -0.05dB at 23.0kHz; -3dB at 23.9kHz
fs=96kHz: -0.05dB at 32.0kHz, -3dB at 47.9kHz
fs=192kHz: -0.05dB at 32.0kHz, -3dB at 78.0kHz
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CMRR:
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20Hz..20kHz: >70dB
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Inter-channel cross-talk:
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1kHz: <-140dB; 20Hz..20kHz: <-120dB
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Inter-channel phase:
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10Hz..5kHz: ±0.25º, 5kHz..20kHz: ±1.0º, 20kHz..50kHz: ±2.0º
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Overkiller:
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Progressive limiter, auto-aligning, selectable per channel
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Impact filter:
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High-pass filter, -3dB at 80Hz, 40dB/decade (selectable for channels 1-4; whether in line, mic or instrument mode)
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RIAA de-emphasis filter:
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Response accuracy: ±0.22dB at fs=44.1kHz; ±0.14dB at fs=48kHz;±0.015dB at all other sample rates
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M-S matrix:
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Allows direct connection of mid-side mics, or non-matrix mic-preamps (selectable for channels 1-4; whether in line or mic mode)
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Microphone Preamplifiers
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Configuration:
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Electronically balanced, with fully-balanced analog signal path
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Gain:
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10dB to 65dB in 1dB steps (0dBFS = -56dBu to -1dBu)
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Gain accuracy:
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±0.05dB
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Input impedance:
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5.5kR
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THD
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+10dB gain: -116dB at -0.1dBFS (0.00016%)
+40dB gain: -110dB at -0.1dBFS (0.00032%)
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THD+n:
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+10dB gain: -108dB at -0.1dBFS (0.00040%)
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Equivalent input noise (EIN):
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+30dB gain: -128.5dBu (0R source); -126.3dBu (150R source)
+40dB gain: -130.9dBu (0R source); -127.6dBu (150R source)
+50dB gain: -131.2dBu (0R source); -127.7dBu (150R source)
+60dB gain: -131.4dBu (0R source); -127.8dBu (150R source)
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LF roll-off:
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-0.05dB at 20Hz; -3dB at 5Hz
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HF roll-off:
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As per Analog Line Input data (dependent on fs)
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CMRR:
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50Hz/60Hz: >110dB at all gains
1kHz: >100dB at all gains
20kHz: >90dB at all gains
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Phantom power:
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+48V, switchable per channel
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Instrument Preamplifiers
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Configuration:
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Unbalanced, high impedance buffer
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Gain:
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10dB to 65dB in 1dB steps, 18dB pad (0dBFS = -38dBu to 17dBu)
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Gain accuracy:
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±0.05dB
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Input impedance:
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1MR
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Analog Line Outputs
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Configuration:
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Electronically balanced, with fully-balanced analog signal path
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Output amplitude:
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Switchable ‘+4dBu’ (0dBFS=+18dBu) or ‘-10dBV’ (0dBFS=+6dBu)
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Output impedance:
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100R balanced, 50R unbalanced
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Unbalanced mode:
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Automatic, with bootstrapping level compensation
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Total harmonic distortion:
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-107dB (0.00045%, -0.1dBFS)
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THD+n:
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-106dB (0.00050%, -0.1dBFS)
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Dynamic range:
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115dB (-60dBFS)
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Gain accuracy:
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±0.05dB
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LF roll-off:
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-0.05dB at 8Hz; -3dB at <1Hz
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HF roll-off:
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fs=44.1kHz: -0.05dB at 21.4kHz; -3dB at 22.0kHz
fs=48kHz: -0.05dB at 23.2kHz; -3dB at 23.9kHz
fs=96kHz: -0.05dB at 32.0kHz, -3dB at 47.8kHz
fs=192kHz: -0.05dB at 32.0kHz, -3dB at 76.0kHz
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Output balance:
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>50dB
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Inter-channel cross-talk:
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1kHz: <-135dB; 20Hz..20kHz: <-120dB.
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Inter-channel phase:
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10Hz..5kHz: ±0.4º, 5kHz..20kHz: ±0.25º, 20kHz..50kHz: ±0.5º.
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Digital Input
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Formats supported:
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S/PDIF (RCA or TOSlink), ADAT, ADAT SMUX (TOSlink)
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Sample rates supported:
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S/PDIF (2 channel): 44k1, 48k, 88k2, 96k, 176k4, 192k
ADAT (8 channel): 44k1, 48k; ADAT SMUX (4 channel): 88k2, 96k
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Channel Status:
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Ignored
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Word-length:
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24 bits
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AES3 operation:
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Via S/PDIF RCA, using XLR-RCA adapter (supplied)
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Sample-rate converter (SRC):
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Selectable at S/PDIF input, allowing input at any sample rate
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Bit-transparency:
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Maintained (allows recording of Dolby or DTS streams)
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Digital Output
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Formats supported:
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S/PDIF (RCA or TOSlink), ADAT, ADAT S/MUX (TOSlink)
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Sample rates supported:
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S/PDIF (2 channel): 44k1, 48k, 88k2, 96k, 176k4, 192k
ADAT (8 channel): 44k1, 48k; ADAT S/MUX (4 channel): 88k2, 96k
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Channel Status:
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Full implementation, Consumer (S/PDIF) or Professional (AES3)
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Word-length:
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24 bits, or reduction to 16 bits using flat TPDF dither or Prism Sound SNS (Super Noise-Shaping - four alternative shapes available)
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AES3 operation:
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Via S/PDIF RCA, using RCA-XLR adapter (supplied)
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Sample-rate converter (SRC):
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Selectable at S/PDIF output; output rate can be referenced to Wordclock, DI or local clock at 44k1, 48k, 88k2, 96k, 176k4 or 192k
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Bit-transparency:
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Maintained in 24 bit mode (allows playback of Dolby or DTS streams to external decoder)
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Synchronization
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System sample rates:
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44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz or 192kHz
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Synchronization sources:
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Master: Local, Wordclock, DI (S/PDIF input) or ADAT
Slave: 1394 bus master (another FireWire interface or host computer)
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Local clock accuracy:
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+/-10ppm
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Jitter rejection:
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60dB/decade above 100Hz
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Internal mixer delay:
(total analog in to out)
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44.1k: 0.57ms; 48k: 0.52ms; 88k2: 0.20ms; 96k: 0.18ms; 176.4k: 0.09ms; 192k: 0.08ms
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Physical
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Dimensions:
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Table-top (including feet): 440x290x50mm
1U rack-mount (including ears): 483x290x44.5mm
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Weight:
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3.7kg.
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Mains voltage:
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90VAC-250VAC, 50-60Hz
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Power consumption:
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35W
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Fuse rating:
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0.5A(T), 20mm, glass
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Operating ambient:
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0 to 35ºC, 85% maximum relative humidity
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Performance Plots
Except where otherwise stated, audio performance data are typical, RMS, unweighted, 20Hz..20kHz figures, measured at 997Hz, using fs=96kHz and '+4dBu' sensitivity settings.
In keeping with our policy of continual development, specifications are subject to amendment without notice.
E&OE. All Trade Marks acknowledged.
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