LYRA 1

REFERENCE GRADE COMPACT AUDIO INTERFACE

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.

Prism Sound Lyra 1

฿64,000.00

฿57,600.00

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

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

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)

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

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°,

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)

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;

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): W: 483mm D: 242mm H: 44.5mm
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

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

CD with software and manuals	x 1
IEC mains lead	x 1
USB Lead type A to B	x 1

Prism Sound Lyra 1

Front Panel

Rear Panel

Softwere Support

Analogue Line Inputs

Microphone Preamplifiers

Instrument Preamplifiers

Analogue Outputs

Digital Inputs

Digital Outputs

Synchronization

Physical

Supplied Accessories

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

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)

Prism Sound Lyra 1

Front Panel

Rear Panel

Softwere Support

Analogue Line Inputs

Microphone Preamplifiers

Instrument Preamplifiers

Analogue Outputs

Digital Inputs

Digital Outputs

Synchronization

Physical

Supplied Accessories

​