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Prism Sound Lyra 2

Fiche technique

  • Fabricant : Prism Sound
  • Modèle : Lyra 2
  • Catégorie : Interface audionumérique USB
  • Fiche créée le : 12/10/2012
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Interface USB. 2 canaux en entrée 4 en sorties. Conçu et fabriqué entièrement à Cambridge (Angleterre).
Equipée de la conversion Prism Sound, extrêment bien réputée. Spécifications techniques détaillées : cf. Plus bas (c'est en anglais).

En résumé

  • 2 A/D Analogue input channels select from:
    • 2 x Microphone XLR inputs with phantom power and 20dB pads
    • 2 x High-impedance front panel instrument inputs
    • 2 x Balanced line inputs on TRS jack
  • Input preamps gain controlled via software
  • 4 D/A Analogue Line Output channels
  • Headphone output with independent mix and volume control
  • S/PDIF Digital in and out on RCA/phono
  • S/PDIF / ADAT Digital in and out on TOSLINK optical
  • AES3 mode on RCA/Phono with supplied XLR adaptor
  • Word-clock sync I/O on BNC connectors
  • Sample rate conversion on digital inputs or outputs
  • Ethernet port for future expansion (AVB)


Front Panel
Instrument inputs 1&2: Two 6.3mm mono jack sockets
Headphone output: 6.3mm stereo jack socket, with illuminated volume control
Master volume control: Assignable to any selection of outputs, with LED halo indication
Level meters: Multi-segment, multi-color bargraphs with overload indication; two for analog, two for digital, assignable to inputs or outputs (analog output switchable 1/2 or 3/4)
Input selector indicators:
Indicate modes of analog inputs 1-2 as mic/line/instrument; plus phantom power indicator for mic mode
Overkiller-active indicators:
For each analog input, lit when Overkiller limiters are acting
Digital input indicators: Input unlocked, and SRC (sample-rate converter) selected
Digital output indicator: SRC (sample-rate converter) selected
Sync indicator: Master, lit when interface is in local sync
Standby button: With standby indicator (also flashes when unit is in 'identify' mode)

Rear Panel
Mic inputs 1-2: Two XLR sockets for mic input
Line inputs 1-2: Two 6.3mm TRS jack sockets (balanced or unbalanced)
Line outputs 1-4: Four 6.3mm TRS jack sockets (balanced or unbalanced)
Digital inputs: RCA socket for S/PDIF in, TOSLINK for S/PDIF or ADAT/SMUX in; (RCA can operate as AES3 input using XLR-RCA adapter supplied)
Digital outputs: RCA socket for S/PDIF out, TOSLINK for S/PDIF or ADAT/SMUX out;(RCA can operate as AES3 output using RCA-XLR adapter supplied)
Wordclock I/O: Two BNC sockets, output and input (75R)
USB port: USB 2.0 B type device socket
Ethernet port: RJ45 100BaseT socket, for factory and future use
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 or WDM device
Control Panel app: Graphical user interface for control of Lyra unit under Mac OS X or
Windows

Analog Line Inputs
Configuration: Electronically balanced, with fully-balanced analog signal path
Input sensitivity: Switchable ‘+4dBu’ (0dBFS=+18dBu) or ‘-10dBV’ (0dBFS=+6dBu)
Input impedance: 14.5kR
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 78.0kHz
CMRR: 20Hz..20kHz: >70dB
Inter-channel cross-talk: 1kHz: <-140dB; 20Hz..20kHz: <-120dB
Inter-channel phase: 10Hz..5kHz: ±0.25º, 5kHz..20kHz: ±1.0º, 20kHz..50kHz: ±2.0º
Overkiller: Progressive 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)
RIAA de-emphasis filter: Response accuracy: ±0.22dB at fs=44.1kHz; ±0.14dB at fs=48kHz;±
0.015dB at all other sample rates
MS matrix: Allows direct connection of mid-side mics, or non-matrix mic-preamps(selectable for channels 1-2; whether in line or mic mode)

Microphone Preamplifiers
Configuration: Electronically balanced, with fully-balanced analog signal path
Gain: 10dB to 65dB in 1dB steps (0dBFS = -56dBu to -1dBu)
Gain accuracy: ±0.05dB
Input impedance: 5.5kR
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 (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)
LF roll-off: -0.05dB at 20Hz; -3dB at 5Hz
HF roll-off: As per Analog 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: 1MR

Analog Line Outputs
Configuration: Electronically balanced, with fully-balanced analog signal path
Output amplitude: Switchable ‘+4dBu’ (0dBFS=+18dBu) or ‘-10dBV’ (0dBFS=+6dBu)
Output impedance: 100R balanced, 50R unbalanced
Unbalanced mode: Automatic, with bootstrapping level compensation
Total harmonic distortion: -107dB (0.00045%, -0.1dBFS)
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 76.0kHz
Output balance: >50dB
Inter-channel cross-talk: 1kHz: <-135dB; 20Hz..20kHz: <-120dB.
Inter-channel phase: 10Hz..5kHz: ±0.4º, 5kHz..20kHz: ±0.25º, 20kHz..50kHz: ±0.5º.

Digital Input
Formats supported: S/PDIF (RCA or TOSLINK), ADAT, ADAT SMUX (TOSLINK)
Sample rates supported: S/PDIF (2 channel): 44k1, 48k, 88k2, 96k, 176k4, 192k
ADAT (8 channel): 44k1, 48k; ADAT SMUX (4 channel): 88k2, 96k
Channel Status: Ignored
Word-length: 24 bits
AES3 operation: Via S/PDIF RCA, using XLR-RCA adapter (supplied)
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 Output
Formats supported: S/PDIF (RCA or TOSLINK), ADAT, ADAT S/MUX (TOSLINK)
Sample rates supported: S/PDIF (2 channel): 44k1, 48k, 88k2, 96k, 176k4, 192k
ADAT (8 channel): 44k1, 48k; ADAT S/MUX (4 channel): 88k2, 96k
Channel Status: Full implementation, Consumer (S/PDIF) or Professional (AES3)
Word-length: 24 bits, or reduction to 16 bits using flat TPDF dither or Prism Sound
SNS (Super Noise-Shaping - four alternative shapes available)
AES3 operation: Via S/PDIF RCA, using RCA-XLR adapter (supplied)
Sample-rate converter(SRC): ,Selectable at S/PDIF output; output rate can be referenced to Wordclock, DI or local clock at 44k1, 48k, 88k2, 96k, 176k4 or 192k
Bit-transparency: Maintained in 24 bit mode (allows playback of Dolby or DTS streams to external decoder)

Sample-rate converter(SRC)
THD+n: <-137dB (0.000014%, -0.1dBFS)
Dynamic range: >138dB (0.000013%, -60dBFS)

Synchronization
System sample rates: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz or 192kHz
Synchronization sources: Master: Local
Slave: Wordclock, DI (S/PDIF input) or ADAT
Local clock accuracy: +/-50ppm
Jitter rejection: 60dB/decade above 100Hz

Internal mixer delay (total analog in to out) :
44.1k: 0.57ms; 48k: 0.52ms; 88k2: 0.20ms; 96k: 0.18ms; 176.4k:
0.09ms; 192k: 0.08ms

Physical
Dimensions: Table-top (including feet): 285x242x50mm
1U rack-mount (including optional ears): 483x242x44.5mm
Weight: 2.1kg.
Mains voltage: 90VAC-250VAC, 50-60Hz
Power consumption: 15W
Fuse rating: 0.5A(T), 20mm, glass
Operating ambient: 0 to 35ºC, 85% maximum relative humidity

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