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Prism Sound

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Prism Sound Atlas USB Audio Interface (ATLAS)

The Prism Sound Atlas is a USB multi-channel interface aimed at multi-tracking applications featuring a similar feature set to Titan (including the MDIO expansion slot for optional Pro Tools HDX, AES and potentially other digital cards), Atlas will be perfect in the project and multi-track studio for recording as well as for mixing, stereo and stem mastering. The Lyra, Titan and Atlas models feature a 20dB pad on each mic channel to accommodate high sound pressure level (SPL) applications such as drums or close micd guitars or brass.

Our low noise, low distortion, extremely neutral mic pre design has gained a cult popularity amongst existing Prism Sound users and we are pleased to be able to offer a single box 8 channel solution for producers, artists and engineers demanding high-quality front-end with the added benefits of Prism Sound A/D and D/A conversion.



Atlas mic preamps:

  • Digitally controlled gain, fully balanced analogue signal path
  • 55dB of gain in 1dB steps
  • Incredibly transparent:
  • 0.00016% THD (+10dB gain: -116db @ -0.1dBFS)
  • 0.00040% THD+N (+10dB gain: -108dB @ -0.1dBFS)
  • ±0.05 gain accuracy
  • Switchable phantom power, 20dB pad, Overkiller soft limiter, phase, high-pass and RIAA filter on all mic inputs
  • Mid and Side encoder on all mic input pairs
  • Line input functionality



Atlas in brief:

  • 8x analogue I/O (switchable mic/line/instrument modes)
  • 8x high-grade mic pres
  • 2x high impedance, instrument inputs
  • MDIO slot for optional digital interfaces (initially Pro Tools HDX and AES)
  • Optical I/O (with ADAT, ADAT S/MUX or TOSLINK functionality)
  • Stereo digital I/O (S/PDIF or AES)
  • MIDI I/O
  • Wordclock I/O
  • 2x Headphone outputs (sharing a single stereo bus)
  • Ethernet port (for future potential AVB and networking integration)
  • USB 2.0 host
  • 192kHz, 24bit
  • Latest award-winning Prism Sound CleverClox clocking technology
  • Mac OS X and Windows compatible

REAR PANEL

 

Mic / Line inputs

8 x combo connectors with XLR sockets for mic input and 6.3mm TRS jack sockets for line input (balanced or unbalanced)

Line outputs

8 x 6.3mm TRS jack sockets (balanced or unbalanced)

Digital inputs

1 x RCA
1 x TOSLINK for S/PDIF or ADAT Optical input;
(RCA can operate as AES3 input using XLR-RCA adapter supplied)

Digital output

1 x RCA
1 x TOSLINK for S/PDIF or ADAT Optical output;
(RCA can operate as AES3 output using XLR-RCA adapter supplied)

MIDI I/O

2 x 5 Pin DIN sockets (in and out)

Wordclock

2 x BNC sockets, output and input (75R)

USB port

1 x USB 2 port

Ethernet port

For future expansion / AVB

MDIO Expansion Slot

For alternative digital multi-channel I/O

Mains power

3-pin 6A IEC inlet



SOFTWARE SUPPORT

 

Mac OS Support

OS X 10.4 or later, Intel platform

Windows OS Support

Windows Vista, 7 or 8, 32 or 64 bit

Mac audio driver

Core Audio device

Windows audio driver

ASIO device

Control Panel applet

Graphical user interface for control of single or multiple Atlas units 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 1-4; 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 other sample rates

M-S matrix

Allows direct connection of mid-side mics, or non-matrix mic-preamps (selectable for channels 1-4; whether in line or mic mode)



MICROPHONE PREAMPLIFIERS

 

Configuration

Electronically balanced, with fully balanced analogue signal path

Gain

10dB to 65dB in 1dB steps (0dBFS = -56dBu to -1dBu)

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

 

 

Prism Sound
₹2.00
LYRA 1 Audio Interface (LYRA 1)
The Prism Sound Lyra 1 is a USB audio interface designed to deliver reliable precision and high-resolution audio I/O for musicians, vocalists, songwriters, and audio engineers in home, project, and mobile studios.
  • No-compromise Prism Sound audio quality
  • Class compliant (UAC2) USB interface
  • ASIO and WDM drivers for Windows (32 and 64bit)
  • Native CORE AUDIO on Mac OS X
  • UAC2 operation on Linux (no control panel support)
  • Two Prism Sound premium-quality AD channels
  • One high-end integrated microphone preamps (typ. -130dBu EIN)
  • Microphone input has switchable phantom power and 20dB pad
  • One high-impedance front panel instrument input
  • Prism Sound "Overkillers" to gracefully control transient overloads
  • Two Prism Sound premium-quality DA channels, plus independent stereo headphone DA
  • Outputs selectable between workstation bus or Lyra mixer
  • New high-drive headphone output with front-panel volume control



LYRA 1 FRONT PANEL

Instrument Input1 x 6.3mm mono jack socket, auto-detect with software override.
Headphone Output1 x 6.3mm stereo TRS Jack, with illuminated volume control
Master volumeAssignable encoder / push switch with halo indication
Standby buttonwith standby indicator (also flashes when unit is in "identify" mode)
Indication:
Level Meters4 x multi-segment, multi-colour bargraphs with overload indication, 2 for analogue, 2 for digital, assignable to inputs or outputs
Input selectionIndicate mode of analogue inputs 1 & 2 as Mic / line / inst & plus phantom power indicator for mic mode
OverkillerFor both analogue inputs, lit when Overkiller limiters are acting
Digital Inputindicators for digital input unlocked and SRC (sample-rate converter) selected

LYRA 2 FRONT PANEL

Instrument Inputs2 x 6.3mm mono jack sockets, auto-select to analogue inputs 1 & 2 when plugged, software override
Headphone Output1 x 6.3mm stereo TRS Jack with illuminated volume control
Master volumeAssignable encoder / push switch with halo indication
Standby buttonwith standby indicator (also flashes when unit is in 'identify' mode)
Indication:
Level Meters4 x multi-segment, multi-colour bargraphs with overload indication, 2 for analogue, 2 for digital, assignable to inputs or outputs, analogue outputs switchable 1/2 or 3/4.
Input selectionIndicate mode of analogue inputs as Mic / line / inst & plus phantom power indicator for mic mode
OverkillerFor analogue inputs, lit when Overkiller limiters are acting
Digital Inputindicators for digital input unlocked and SRC (sample-rate converter) selected
Digital Outputindicator for SRC (sample-rate converter) selected
SyncMaster indicator, lit when interface is in local sync

LYRA 1 REAR PANEL

Mic Input1 x XLR socket
Line input2 x 6.3mm TRS jack sockets (balanced or unbalanced)
Line outputs2 x 6.3mm TRS jack sockets (balanced or unbalanced)
Digital inputs1 x TOSLINK for S/PDIF input
Digital output1 x TOSLINK for S/PDIF output
USB port1 x USB type B receptacle
Mains power3-pin 6A IEC inlet

LYRA 2 REAR PANEL

Mic inputs2 x XLR sockets
Line inputs2 x 6.3mm TRS jack sockets (balanced or unbalanced)
Line outputs 1-44 x 6.3mm TRS jack sockets (balanced or unbalanced)
Digital inputs1 x RCA
1 x TOSLINK for S/PDIF or ADAT Optical input;
(RCA can operate as AES3 input using XLR-RCA adapter supplied)
Digital output1 x RCA
1 x TOSLINK for S/PDIF or ADAT Optical output;
(RCA can operate as AES3 output using XLR-RCA adapter supplied)
Wordclock2 x BNC sockets, output and input (75Ω)
USB port1 x USB type B receptacle
Network port1 x RJ45 AVB ethernet port
Mains power3-pin 6A IEC inlet

SOFTWARE SUPPORT

Mac OS SupportOS X 10.5 or later Intel platform
Windows OS SupportWindows Vista, 7, 8 or later (32 or 64 bit)
Mac audio driverCore Audio device
Windows audio driverASIO device, WDM coming soon
Linux audio driverLyra is a UAC2 class compliant device - no driver needed on recent distros
Control Panel appletGraphical user interface for control of Lyra unit under Mac OS X or Windows

ANALOGUE LINE INPUTS

ConfigurationElectronically balanced, with fully-balanced analogue signal path
Input SensitivitySwitchable '+4dBu' (0dBFS = +18dBu) or '-10dBV' (0dBFS = +6dBu)
Input Impedance14.5kΩ
Unbalanced ModeAutomatic
Total harmonic distortion-117dB (0.00014%, -0.1dBFS)
THD+N-111dB (0.00028%, -0.1dBFS)
Dynamic Range116dB (-60dBFS)
Gain Accuracy±0.05dB
LF roll-off-0.05dB at 8Hz; -3dB at <1Hz
HF roll-offfs = 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
CMRR20Hz..20kHz: >70dB
Inter-channel cross-talk1kHz: <140dB; 20Hz..20kHz: <-120dB
Inter-channel phase10Hz..5kHz: ±0.25°,
5kHz..20kHz: ±1.0°,
20kHz..50kHz: ±2.0°,
OverkillerProgessive limiter, auto-aligning, selectable per channel
Impact FilterHigh-pass filter, -3dB at 80Hz, 40dB/decade (selectable for channels 1-2; whether in line, mic or instrument mode)
RIAA de-emphasis filter
(Lyra 2 only)
Response accuracy:
±0.22dB at fs=44.1kHz;
±0.14dB at fs=48kHz;
±0.015dB at other sample rates
M-S matrix (Lyra 2 only)Allows direct connection of mid-side mics, or non-matrix mic-preamps

MICROPHONE PREAMPLIFIERS

ConfigurationElectronically balanced, with fully balanced analogue signal path
Gain10dB to 65dB in 1dB steps (0dBFS = -56dBu to -1dBu) plus switchable -20dB pad
Gain accuracy±0.05dB
Input impedance5.5kΩ
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-offAs per analogue line input data (dependent on fs)
CMRR50Hz/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

ConfigurationUnbalanced, high impedance buffer
Gain10dB to 65dB in 1dB steps, 18dB pad (0dBFS = -38dBu to 17dBu)
Gain accuracy±0.05dB
Input impedance1MΩ



Prism Sound
₹0.00
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