Prism Sound Atlas USB multi-track audio interface
Tax included.
No-compromise, full Prism Sound audio quality.
Atlas is a USB multi-track audio interface for personal recording and sound production, for professional musicians, songwriters, engineers and producers as well as recording studios, post production facilities and scoring stages. Atlas is ideal for music and sound recording, mixing, multitracking, overdubbing, stem-based mastering, analogue summing and critical listening applications.
Signal path
Atlas provides Prism Sound's renowned performance, sound quality and state-of-the-art clock technology in a dedicated unit compatible with both Windows (Vista, 7 and 8, 32 and 64 bit, ASIO as well as MAC OS X 10.4.11 and later (Intel). Once configured with a computer, Atlas can also operate stand-alone using its ADAT, S/PDIF or AES3 I/O.
Eight analogue input channels and up to 10 digital input channels are available as inputs for your audio workstation software through the host computer's audio driver. Similarly, eight analogue output channels, up to 10 digital output channels and stereo headphone outputs can play 20 different channels. For low-latency foldback or monitoring to headphones or main outputs, each output pair (1-2, 3-4 etc or the headphone output) can optionally be driven from the built-in DSP mixer with an individual local mix of any selection of inputs through the controller applet. All analogue inputs are electronically balanced with automatic unbalanced operation. Analogue outputs are electronically balanced with 'bootstrapping', i.e. level is maintained if one leg is grounded.
No-compromise, full Prism Sound audio quality
Atlas makes no compromises on audio quality. It is the result of years of research and development into digital audio conversion and extensive dialogue with Prism Sound's customers.
Standards compliant USB interface
Prism Sound has taken on board the increasing importance of native processing power for professional users and the fact that software products for standard PC and Mac platforms have been greatly enhanced in recent years. Atlas uses a USB2 interface. This is a UAC2 (USB Audio Class 2) interface supported natively in Mac, iPad, Linux and Android, and in Windows via a driver.
Multichannel Digital Input and Output (MDIO) expansion
Atlas & Titan support Prism Sound’s MDIO expansion cards, which provide alternative “host” connections. The “host” is usually a computer and the Atlas or Titan interface provides a means of connection between the host and the external analogue and digital audio I/O ports.
Without the MDIO expansion card fitted, the host connection would always be the default USB connection.
The MDIO expansion slot provides an alternative host connection. It does not necessarily disable the USB port, but in the case of the Pro Tools interface MDIO-PTHDX, the USB port is switched off when the Pro Tools interface is to be used.
Currently, only the MDIO-PTHDX expansion card is available. Others may be produced later.
Flexible Inputs and Outputs
Prism customers told us that many professional users wanted a highly integrated solution with instrument and microphone inputs, and line outputs that could be used for stereo or multi-channel monitoring and/or foldback to performers. Atlas offers eight analogue recording channels, eight monitoring outputs, stereo digital input and output on a phono connector plus concurrent optical digital I/O ports that can interface to S/PDIF or ADAT data formats, giving Atlas a maximum capability of 18 concurrent input and output channels plus stereo headphones.
Front panel
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Instrument Inputs |
2 x 6.3mm mono jack sockets, auto-select to analogue inputs 1 & 2 when plugged |
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Headphone Outputs |
2 x 6.3mm stereo TRS Jacks, each with illuminated volume control |
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Master volume |
Assignable encoder / push switch with halo indication |
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Standby button |
with standby indicator (also flashes when unit is in 'identify' mode) |
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Indication: |
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Level Meters |
10 x multi-segment bargraphs with overload indication, 8 for analogue, 2 for digital, assignable to inputs or outputs |
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Input selection |
Indicate mode of analogue inputs 1-8 as Mic / line / inst with phantom power indication for mic mode |
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Overkiller |
For every analogue input, lit when Overkiller limiters are acting |
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Digital Input |
indicators for digital input unlocked and SRC (sample-rate converter) selected |
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Digital Output |
indicator for SRC (sample-rate converter) selected |
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Sync |
Master indicator, lit when interface is providing system sync |
Rear Panel
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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) |
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Line outputs |
8 x 6.3mm TRS jack sockets (balanced or unbalanced) |
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Digital inputs |
1 x RCA |
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Digital output |
1 x RCA |
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MIDI I/O |
2 x 5 Pin DIN sockets (in and out) |
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Wordclock |
2 x BNC sockets, output and input (75R) |
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USB port |
1 x USB 2 port |
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Ethernet port |
For future expansion / AVB |
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MDIO Expansion Slot |
For alternative digital multi-channel I/O |
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Mains power |
3-pin 6A IEC inlet |
AD Sections
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Configuration |
Electronically balanced, with fully-balanced analogue signal path |
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Input Sensitivity |
Switchable '+4dBu' (0dBFS = +18dBu) or '-10dBV' (0dBFS = +6dBu) |
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Input Impedance |
14.5kΩ |
|
Unbalanced Mode |
Automatic |
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Total harmonic distortion |
-117dB (0.00014%, -0.1dBFS) |
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THD+N |
-111dB (0.00028%, -0.1dBFS) |
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Dynamic Range |
116dB (-60dBFS) |
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Gain Accuracy |
±0.05dB |
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LF roll-off |
-0.05dB at 8Hz; -3dB at <1Hz |
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HF roll-off |
fs = 44.1kHz: -0.05dB at 21.1kHz; -3dB at 22.0kHz |
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CMRR |
20Hz..20kHz: >70dB |
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Inter-channel cross-talk |
1kHz: <140dB; 20Hz..20kHz: <-120dB |
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Inter-channel phase |
10Hz..5kHz: ±0.25°, |
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Overkiller |
Progessive limiter, auto-aligning, selectable per channel |
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Impact Filter |
High-pass filter, -3dB at 80Hz, 40dB/decade (selectable for channels 1-4; whether in line, mic or instrument mode) |
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RIAA de-emphasis filter |
Response accuracy: |
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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) |
DA Sections
|
Configuration |
Electronically balanced, with fully-balanced analogue signal path |
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Output amplitude |
Switchable '+4dBu' (0dBFS = +18dBu) or '-10dBV (0dBFS = +6dBu) |
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Output impedance |
100Ω balanced, 50Ω unbalanced |
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Unbalanced mode |
Automatic, with bootstrapping level compensation |
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Total harmonic distortion |
-107dB (0.00045%, -1dBFS) |
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THD+N |
-106dB (0.00050%, -0.1dBFS) |
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Dynamic range |
115dB (-60dBFS) |
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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 |
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Output balance |
>50dB |
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Inter-channel cross-talk |
1kHz: <135dB; 20Hz..20kHz: <-120dB |
|
Inter-channel phase |
10Hz..5kHz: ±0.4°, |
Digital Ins
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Formats supported |
S/PDIF (RCA or TOSLINK), ADAT, ADAT S/MUX (TOSLINK) |
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Sample rates supported |
S/PDIF (2 channel): 44.1, 48, 88.2, 96, 176.4 and 192kHz |
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Channel Status |
ignored |
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Word-length |
24 bit |
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AES3 operation |
via S/PDIF RCA, using RCA-XLR adaptor (supplied) |
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Sample-rate converter (SRC) |
Selectable at S/PDIF input; allowing input at any sample rate |
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Bit transparency |
Maintained (allows recording of Dolby or DTS streams) |
Digital Outs
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Formats supported |
S/PDIF (RCA or TOSLINK), ADAT, ADAT S/MUX (TOSLINK) |
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Sample rates supported |
S/PDIF (2 channel): 44.1, 48, 88.2, 96, 176.4 and 192kHz |
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Channel Status |
Full implementation, Consumer (S/PDIF) or professional (AES3) |
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Word-length |
24 bit, or reduction to 16 bits using flat TPDF dither or Prism Sound SNS (Super Noise Shaping - four alternative shapes available) |
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AES3 operation |
via S/PDIF RCA, using RCA-XLR adaptor (supplied) |
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Sample-rate converter (SRC) |
Selectable at S/PDIF output; output rate can be referenced to Wordclock, DI or local clock at 44.1, 48, 88.2, 96, 176.4 or 192kHz |
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Bit transparency |
Maintained in 24 bit mode (allows playback of Dolby or DTS streams to external decoder) |
Buy the Prism Atlas USB multi-track audio interface from Audiosaurus online today, the Pro Audio experts in South Africa.
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