Our take
Top tier DAC performance, inexpensive, great match with Atom, simple as it gets. Bang for buck! - GPJ
JDS Labs Atom DAC, built to pair with the enormously popular JDS Labs Atom Amp adopts the latest XMOS based USB Audio Class 2 input stage with support for future firmware updates. A subtle light ring glows when in use, and automatically powers down during inactivity. A dedicated transformer ensures mains isolation. Stack Atom DAC with your Atom Amp and enjoy!
"When JDS Labs puts out something, you pay attention! When they put up something relatively affordable, you just buy it!" Zeos ZReview
AudioScience Review
Product details
MEMS Oscillator
Atom DAC's USB engine is clocked by an SiTime MEMS oscillator with +/-10ppm frequency stability, delivering pristine jitter.
Upgradeable Firmware
Atom DAC's XMOS based firmware configures and manages its USB input, with DFU support for future feature additions.
USB Audio Class 2
Atom DAC supports up to 32/384 kHz PCM over a custom XMOS XU208 based UAC2 engine. While we claim no measurable superiority of high sampling rates, UAC2 and ASIO support satisfy your pursuit of bitperfect listening.
Externally Powered
Atom DAC is powered by a perfected supply network, with an external AC transformer and 10 regulators that ensure consistent rail voltage and super low ripple.
Automatic Standby
Atom DAC automatically enters standby after 15mins of inactivity, powering down its light ring and D/A circuitry, and audio wakes up within milliseconds. Standby can optionally be disabled by loading our "sleepless" firmware.
Differential Summing Output
Differential output of a AK4490EQ DAC is summed by a low noise NJR output stage, with DC coupling throughout. Drive any load you wish.
Package:
1 x Atom DAC
1 x 15VAC Power Adapter
Tech specs
| Audio Formats | 16/44.1kHz thru 32/384kHz PCM |
| USB Interface | USB Audio Class 2 |
| USB Driver OS Support | Windows 7/8/10, MacOS, Linux, Android |
| Frequency Response, 10Hz -20kHz | +/-0.15dB |
| SINAD | 110dB |
| THD+N, 20Hz - 20kHz, 32 Ω | < 0.0008% |
| IMD CCIF 19/20kHz, 32 Ω | 0.00013% |
| IMD SMPTE 32 Ω | 0.0017% |
| Noise (A-Weighted) | -109 dBu |
| Dynamic Range (A-Weighted) | 117 dB |
| Linearity Error -90 dBFS | -0.06 dB |
| Crosstalk 10 dBFS 100K RCA | -104 dB |
| USB Jitter Components 12kHz | -124 dB |
| Max DAC Line-Output, 100K | 2.00 VRMS |
| PCB Stackup | 4 Layers |
| Digital Inputs | USB |
| DAC Line-Output | RCA |
| Case Dimensions | 5.0 x 5.3 x 1.4 in |
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