Description
Lyra represents the pinnacle of compact audio interfaces. Packing Prism Sounds trusted, uncompromising AD/DA conversion into a compact chassis perfect for use in the studio or on the road.
Based on the Orpheus’ audio path and clock circuitry, Lyra is ideal for those who don’t require a large I/O count, but do demand the highest quality and most transparent AD/DA available.
RENOWNED AD/DA CONVERSION
Lyra cuts no corners in its design and boasts the same trusted Prism Sound convertors used on countless hit records. It’s ultra-transparent characteristic means what you put into the Lyra is exactly what you get out of it.
PRISTINE PRE-AMPLIFICATION
Featuring a single class-A microphone preamp, Lyra 1 guarantees superbly clean, detailed recordings that capture a performance the way it was intended.
SOFT-CLIP LIMITING (OVERKILLER)
Lyra’s analogue input channels include a switchable Prism Sound ‘Overkiller’ circuit. This soft-clip limiter gently absorbs transients and allows signal levels to be pushed to their limits without risk.
QUALITY SUPPORT
Prism Sound’s reputation for audio excellence has been matched only by its top quality after-sales support and technical advice. The longevity of a Prism Sound product is a testament to the dedicated team behind it.
Technical Specifications:
Front Panel
| Instrument Input | 1 x 6.3mm mono jack socket, auto-detect with software override. |
| Headphone Output | 1 x 6.3mm stereo TRS Jack, with illuminated volume control |
| Master volume | Assignable encoder / push switch with halo indication |
| Standby button | with standby indicator (also flashes when unit is in “identify” mode) |
| Indication: | |
| Level Meters | 4 x multi-segment, multi-colour bargraphs with overload indication, 2 for analogue, 2 for digital, assignable to inputs or outputs |
| Input selection | Indicate mode of analogue inputs 1 & 2 as Mic / line / inst & plus phantom power indicator for mic mode |
| Overkiller | For both analogue inputs, lit when Overkiller limiters are acting |
| Digital Input | indicators for digital input unlocked and SRC (sample-rate converter) selected |
Rear Panel
| Mic Input | 1 x XLR socket |
| Line input | 2 x 6.3mm TRS jack sockets (balanced or unbalanced) |
| Line outputs | 2 x 6.3mm TRS jack sockets (balanced or unbalanced) |
| Digital inputs | 1 x TOSLINK for S/PDIF input |
| Digital output | 1 x TOSLINK for S/PDIF output |
| USB port | 1 x USB type B receptacle |
| Mains power | 3-pin 6A IEC inlet |
Software Support
| Mac OS Support | OS X 10.5 or later Intel platform |
| Windows OS Support | Windows Vista, 7, 8 or later (32 or 64 bit) |
| Mac audio driver | Core Audio device |
| Windows audio driver | ASIO device, WDM coming soon |
| Linux audio driver | Lyra is a UAC2 class compliant device – no driver needed on recent distros |
| Control Panel applet | Graphical user interface for control of Lyra unit under Mac OS X or Windows |
Analogue Line Inputs
| Configuration | Electronically balanced, with fully-balanced analogue signal path |
| Input Sensitivity | Switchable ‘+4dBu’ (0dBFS = +18dBu) or ‘-10dBV’ (0dBFS = +6dBu) |
| Input Impedance | 14.5kΩ |
| Unbalanced Mode | Automatic |
| Total harmonic distortion | -117dB (0.00014%, -0.1dBFS) |
| THD+N | -111dB (0.00028%, -0.1dBFS) |
| Dynamic Range | 116dB (-60dBFS) |
| Gain Accuracy | ±0.05dB |
| LF roll-off | -0.05dB at 8Hz; -3dB at <1Hz |
| HF roll-off | 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 78kHz |
| CMRR | 20Hz..20kHz: >70dB |
| Inter-channel cross-talk | 1kHz: <140dB; 20Hz..20kHz: <-120dB |
| Inter-channel phase | 10Hz..5kHz: ±0.25°, 5kHz..20kHz: ±1.0°, 20kHz..50kHz: ±2.0°, |
| Overkiller | Progessive limiter, auto-aligning, selectable per channel |
| Impact Filter | High-pass filter, -3dB at 80Hz, 40dB/decade (selectable for channels 1-2; whether in line, mic or instrument mode) |
Microphone Preamplifiers
| Configuration | Electronically balanced, with fully balanced analogue signal path |
| Gain | 10dB to 65dB in 1dB steps (0dBFS = -56dBu to -1dBu) plus switchable -20dB pad |
| Gain accuracy | ±0.05dB |
| Input impedance | 5.5kΩ |
| THD | +10dB gain: -116dB at -0.1dBFS (0.00016%) +40dB gain: -110dB at -0.1dBFS (0.00032%) |
| THD+N | +10dB gain: -108dB at -0.1dBFS (0.00040%) |
| Equivalent input noise (EIN) | +30dB gain: -128.5dBu (0Ω source); -126.3dBu (150Ω source) +40dB gain: -130.9dBu (0Ω source); -127.6dBu (150Ω source) +50dB gain: -131.2dBu (0Ω source); -127.7dBu (150Ω source) +60dB gain: -131.4dBu (0Ω source); -127.8dBu (150Ω source) |
| LF roll-off | -0.05dB at 20Hz, -3dB at 5Hz |
| HF roll-off | As per analogue line input data (dependent on fs) |
| CMRR | 50Hz/60Hz: >110dB at all gains 1kHz: >100dB at all gains 20kHz: >90dB at all gains |
| Phantom power | +48V, switchable per channel |
| Pad | -20dB, switchable per channel |
Instrument Preamplifiers
| Configuration | Unbalanced, high impedance buffer |
| Gain | 10dB to 65dB in 1dB steps, 18dB pad (0dBFS = -38dBu to 17dBu) |
| Gain accuracy | ±0.05dB |
| Input impedance | 1MΩ |
Analogue Outputs
| Configuration | Electronically balanced, with fully-balanced analogue signal path |
| Output amplitude | Switchable ‘+4dBu’ (0dBFS = +18dBu) or ‘-10dBV (0dBFS = +6dBu) |
| Output impedance | 100Ω balanced, 50Ω unbalanced |
| Unbalanced mode | Automatic, with bootstrapping level compensation |
| Total harmonic distortion | -107dB (0.00045%, -1dBFS) |
| THD+N | -106dB (0.00050%, -0.1dBFS) |
| Dynamic range | 115dB (-60dBFS) |
| Gain accuracy | ±0.05dB |
| LF roll-off | -0.05dB at 8Hz, -3dB at <1Hz |
| HF roll-off | 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 76kHz |
| Output balance | >50dB |
| Inter-channel cross-talk | 1kHz: <-135dB; 20Hz..20kHz: <-120dB |
| Inter-channel phase | 10Hz..5kHz: ±0.4°, 5kHz..20kHz: ±0.25°, 20kHz..50kHz: ±0.5°, |
Digital Inputs
| Formats supported | S/PDIF TOSLINK |
| Sample rates supported | 44.1, 48, 88.2, 96, 176.4 and 192kHz |
| Channel Status: | Ignored |
| Word-length | 24 bit |
| Sample-rate converter (SRC) | Selectable at S/PDIF input; allowing input at any sample rate |
| Bit transparency | Maintained (allows recording of Dolby or DTS streams) |
Digital Outputs
| Formats supported | S/PDIF TOSLINK |
| Sample rates: S/PDIF | 44.1, 48, 88.2, 96, 176.4 and 192kHz |
| Channel Status | Full implementation, Consumer (S/PDIF) |
| Word-length | 24 bit, or reduction to 16 bits using flat TPDF dither or Prism Sound SNS (Super Noise Shaping – four alternative shapes available) |
| Bit transparency | Maintained in 24 bit mode (allows playback of Dolby or DTS streams to external decoder) |
Synchronisation
| System sample rates | 44.1 / 48 / 88.2 / 96 / 176.4 / 192kHz |
| Sync sources: | |
| Master | local, DI (S/PDIF input) |
| Local clock accuracy | ±50ppm |
| Jitter rejection | >60dB / decade above 100Hz |
| Internal mixer delay (total analogue in to out) |
fs = 44.1kHz: 0.57ms; fs = 48kHz: 0.52ms; fs = 88.2kHz: 0.2ms; fs = 96kHz: 0.18ms; fs = 176.4kHz: 0.09ms; fs = 192kHz: 0.08ms; |
Physical
| Form factor | 2/3 width, 1U 19inch rack mountable (Rack ears available as an option) |
| Dimensions | Table top (inc. feet): W: 285mm D: 242mm H: 50mm Rack-mount (inc. optional ears): |
| Power: | 90-250VAC, 50-60Hz internal power supply IEC 6A connector |
| Power consumption | 15W |
| Fuse rating | 0.5A(T), 20mm, glass |
| Weight: | 2.1kg |
| Operation ambient conditions | 0 to 35°C, 85% maximum relative humidity |
Supplied Accessories
| CD with software and manuals | x 1 |
| IEC mains lead | x 1 |
| USB Lead type A to B | x 1 |
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