




Atom DAC
ATOM, STACKED
Atom DAC is built to pair with the enormously popular JDS Labs Atom Amp, adopting our 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!
![]() |
MEMS OSCILLATORAtom DAC's USB engine is clocked by an SiTime MEMS oscillator with ±10ppm frequency stability, delivering pristine jitter. |
![]() |
UPGRADEABLE FIRMWAREAtom DAC's XMOS based firmware configures and manages its USB input, with DFU support for future feature additions. |
![]() |
USB AUDIO CLASS 2Atom DAC supports up to 32/384kHz 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 POWEREDAtom 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 STANDBYAtom DAC automatically enters standby after 15 minutes 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 OUTPUTDifferential output of a AK4490EQ DAC is summed by a low noise NJR output stage, with DC coupling throughout. Drive any load you wish. |
SPECIFICATIONS
DAC PERFORMANCE
- Frequency Response 10Hz-20kHz+/- 0.15dB
- SINAD110 dB
- THD+N 20Hz-20kHz< 0.0008%
- IMD CCIF 19/20 kHz -6.03 dBFS0.00013%
- IMD SMPTE -6.03 dBFS0.0017%
- 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
- Maximum DAC Line-Output, 100K2.00 VRMS
- PCB Stackup4 Layers
DIMENSIONS
- 5.0 x 5.3 x 5.4 in
- Weight8 oz
DATA SUPPORT
- 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
CONNECTIVITY
- Digital Inputs USB
- DAC Line-Output RCA
CONFIGURATION
- Dual Gain1.0x and 4.5x
- Volume Potentiometer TaperAlps 15A
PACKAGED ITEMS
- Atom DAC
- 15VAC Power Adapter
- 3ft USB Type A to Type B Cable w/Ferrite