Description
This is the 5th (latest) version of DAC. I’ve been keep investing on this AD1852 based design since 2012. So it is not a fancy but well optimized, ulta-low noise and THD design. The LPF has been being improved based on thousands of international users – see the measurements below on the real product.
![DAC Board AD1852](/wp-content/uploads/2018/06/AD1852.jpg)
Parameters:
PCB Size: 140*138MM
Power supply: 2*15V AC, 9V AC, Max 15W
Input: USB, Fiber, Coaxial
Output: L/R RCA
Features:
* support 24BIT/96K. Digital input sampling, compatible with SACD 96K playback
* digital analog separation PCB design, 5 sets of independent power supply
* Ultra-low jitter (<50ps) receiver DIR9001 on digital reception interface.
* AD1852ST5 DAC + NE5534 (one piece per channel)
* Excellent circuit design and PCB manufacturing allows extremely low THD and noise
Measurements
* Extremely low background noise: <-120bBV at 0-1KHz, <-130dBV at 1-20KHz, in both input shortcut and digital mute stage
DAC Board AD1852
![DAC Board AD1852](/wp-content/uploads/2018/06/Background-noise-L-R-channels-when-digital-mute.jpg)
* RMAA measurement – General performance Excellent
![DAC Board AD1852](/wp-content/uploads/2018/06/RMAA-measurement.jpg)
![DAC Board AD1852](/wp-content/uploads/2018/06/RightMark-Audio-Analyzer-test-report.jpg)
* Overall measurement
* 20Hz-20KHz Frequency response: -0.54, +0.04dB
![DAC Board AD1852](/wp-content/uploads/2018/06/Frequency-Response.jpg)
* In band noise level: <-96dB
![DAC Board AD1852](/wp-content/uploads/2018/06/Inband-noise-level.jpg)
* Dynamic Range: >96dB
![DAC Board AD1852](/wp-content/uploads/2018/06/Dynamic-Range.jpg)
* THD at -3dB FS: 0.0009%
![DAC Board AD1852](/wp-content/uploads/2018/06/THD-plus-Noise.jpg)
* THD + Noise at -3dB FS: 0.0034%
* IMD + Noise: 0.0042% (0.0037% A-weighted)
![DAC Board AD1852](/wp-content/uploads/2018/06/Intermodulation-distortion.jpg)
![DAC Board AD1852](/wp-content/uploads/2018/06/IWD.jpg)
* Stereo Crosstalk: -100dB at 100Hz, -98dB at 1000Hz, -94dB at 10KHz
![DAC Board AD1852](/wp-content/uploads/2018/06/Stereo-Crosstalk.jpg)
- Visual Analyzer
DAC Board AD1852 DAC Board AD1852 DAC Board AD1852 DAC Board AD1852
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