Orpheus Technical Specifications

Unless otherwise stated, specifications are RMS, unweighted, band-limited 20Hz-20kHz, 24bit sampling and 96kHz, line-up at 0dBFS=+18dBu.

---

Physical Dimensions 1u 19inch rack mountable (rubber feet and rack ears supplied) W: 483mm D: ??mm H: 44mm Power: 90-250VAC, 50/60Hz, 35W internal power supply IEC 6A connector Weight: ??kg net, ??kg packed FRONT PANEL CONNECTIONS Instrument Inputs 2 x electronically balanced 6.3mm TRS Jacks Headphone Outputs 2 x 6.3mm stereo TRS Jacks REAR PANEL CONNECTIONS Analogue mic/line inputs 4 x Neutrik combo connectors (XLR and 6.3mm TRS Jack) Analogue line inputs 4 x electronically balanced 6.3mm TRS Jacks Analogue line outputs 8 x electronically balanced 6.3mm TRS Jacks Digital input 1 x RCA 1 x TOSLINK/ADAT Optical Digital output 1 x RCA 1 x TOSLINK/ADAT Optical MIDI 2 x 5 Pin DIN female (in and out/thru) Wordclock 2 x 75R BNC female (in and out) FireWire 2 x FireWire IEEE1394A (host and cascade) Mains IEC 6A FRONT PANEL CONTROLS Master volume Assignable encoder with push switch function and halo level indication Headphone volume 2 x volume controls, 1 per headphone output with halo level indication INDICATION Meters 8 x multi-segment LED meters for analogue connections - switchable for input or output 2 x multi-segment LED meters for digital connection - switchable for input or output Overkiller 8 x Overkiller engaged/active indicators (1 per analogue input channel) Digital Connection 1 x digital input locked indicator 1 x SRC active indicator Input Selection indicators for for Mic/line/inst selection (including phantom power) Sync 1 x Sync Master indicator Standby/Active 1 x bicolour indicator Software Support DRIVER / OS SUPPORT Orpheus's driver applet will operate with Windows XP (WDM or ASIO 2.0 driver) or Vista, or Mac OS X (Core Audio, Intel or PPC). This driver will transact the audio channels with compatible applications and also allow control of basic unit functionality. FIRMWARE DOWNLOADER A downloader is available for each OS allowing updating of the unit's firmware. Synchronization Sample rates 44.1/48/88.2/96/176.4/192kHz (input and output paths must be synchronous) SYNC MODES Local: SYT master, local or DI/WCK input DI: sync to digital input, even if analogue input selected, SYT master CSP: sync to host or random interface FireWire phy crystal SYT slave: sync to timestamps from master interface synced to local or DI/WCK

Analogue Connections SIGNAL PATH: The eight analogue input channels and the two [eight if ADAT] digital input channels are available as DAW inputs through the host's audio driver. Similarly, the eight analogue output channels, the two [eight if ADAT] digital output channels and the stereo headphone outputs may all be driven independently via the audio driver. Alternatively, local mixing for all outputs may be selected through the control applet (e.g. low-latency foldback to headphones from inputs, local monitor mixes etc.) All inputs are differential inputs with automatic unbalanced operation. MIC/LINE/INSTRUMENT INPUTS Line input level for 0dBFS +18dBu ('+4dBu' setting) +6dBu ('-10dBV' setting) Mic input level for 0dBFS -55dBu to 0dBu in 1 dB steps Instrument input level for 0dBFS -49dBu to +6dBu in 1dB steps Input impedance Line: 15kR Mic: 5kR Instrument: 1MR Overkiller switchable, auto-aligning Phantom power switchable, +48V (jumper selectable for +15V), per mic-capable channel Impact filter 80Hz HPF switchable for mic-capable inputs M/S matrix available on mic-capable input pairs THD+N (0dBFS, line inputs at '+4dBu' and '-10dBV' sensitivities) <-108dB Dynamic Range (-60dBFS, line inputs at '+4dBu' and '-10dBV' sensitivities) >117dB CMRR >90dB on most sensitive attenuator range >60dB elsewhere Cross-talk <-130dB 20Hz-20kHz: <-120dB Gain matching, absolute <+/-0.05dB inter-channel: <+/-0.05dB Inter-channel phase matching <+/-0.05 degrees EIN at -40dBu=0dBFS TBD ANALOGUE OUTPUTS Line level for 0dBFS +18dBu ('+4dBu' setting) +6dBu ('-10dBV' setting) Type bootstrapping balanced/unbalanced Output impedance 50R balanced 25R unbalanced THD+N < -108dB Dynamic Range (-60dBFS) >117dB Output balance <-50dB 20Hz-20kHz: <-50dB Cross-talk <-130dB 20Hz-20kHz: <-120dB Gain matching, absolute <+/-0.05dB inter-channel: <+/-0.05dB Inter-channel phase matching <+/-0.05 degrees Digital Connections DIGITAL INPUTS RCA Direct coupled operates from 200mV to 5V P-P 75R input impedance TOSLINK up to 96kHz S/PDIF ADAT, 8 channels at base rates, 4 channels at 2x rates Split96 operation not supported Sample Rate Conversion (SRC) enable/disable (can also be switched to output) Channel Status ignored Jitter rejection at converters >60dB/decade above 100Hz DIGITAL OUTPUTS RCA Transformer coupled 0.5V P-P loaded (jumper for 1.0V) 75R impedance TOSLINK up to 96kHz S/PDIF ADAT, 8 channels at base rates, 4 channels at 2x rates Split96 operation not supported Channel Status full implementation Super Noise Shaping (SNS) Types 1-4 available, 16-bit only Sample Rate Conversion (SRC) may be switched to outputs, with selectable sample rate or set to sync to wordclock input

Specifications provisional and subject to amendment.