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© DENAFRIPS CO. LTD. & VINSHINE AUDIO PTE. LTD. (SINGAPORE)  

ALL RIGHTS RESERVED 

3.

 

DESIGN HIGHLIGHTS 

3.1

 

ADAPTIVE FIFO BUFFER RECLOCKING 

The DENAFRIPS approach to address the jitters issue by FIFO BUFFER RECLOCKING. The 
adaptive FIFO buffer store the source digital audio data in the memory. These data are read 
from the memory using the low phase noise, precision FEMTO Clock, located right in the 
DAC. 

This technology is close to the perfection, especially so with the local FEMTO Clock. The 
jitter is so small that it can be neglected.  

3.2

 

I2S INPUT 

PONTUS comes with a LVDS I2S input over the HDMI connector. Despite the I2S input has no 
industrial standard, it is probably the best digital input interface to-date. 

NOTE

: DENAFRIPS 

cannot guarantee the compatibility with other I2S devices.

 

3.3

 

PROPRIETARY, STATE-OF-THE-ART USB INTERFACE 

The PONTUS is equipped with the proprietary USB Audio Solution, powered by STM32F446 
Advanced AMR Based MCU. DENAFRIPS redesigned and optimized circuitry, allow the DAC 
to be used as high-end DAC with computers / streamers. It supports 24bit/1536kHz PCM 
data stream, and native decoding of DSD up to DSD1024. It comes with licensed THESYCON 
USB Driver for Windows Platform. 

NOTE:

 The USB Module is designed to trigger on 

only

 when USB Input is selected. This is 

intended design to reduce digital input interfaces cross-interference for best sound 
reproduction.  

3.4

 

PROPRIETARY SPDIF DIGITAL AUDIO RECEIVER 

The SPDIF Coaxial, Optical, AES/EBU input support up to 24bit/192kHz digital audio format. 
The PONTUS abandon the use of Digital Audio Receiver chip. The digital data is decoded by 
the on-board FPGA (Field Programmable Gate Array), signal path is shortened and 
eliminated the undesirable coloration. 

 

Summary of Contents for PONTUS II

Page 1: ... DENAFRIPS CO LTD VINSHINE AUDIO PTE LTD SINGAPORE ALL RIGHTS RESERVED V1 0 5th Feb 2021 PONTUS II DAC OWNER S MANUAL ...

Page 2: ... ADAPTIVE FIFO BUFFER RECLOCKING 4 3 2 I2S INPUT 4 3 3 PROPRIETARY STATE OF THE ART USB INTERFACE 4 3 4 PROPRIETARY SPDIF DIGITAL AUDIO RECEIVER 4 3 5 NOS OS 5 3 6 PROPRIETARY R 2R AND DSD DECODING ARCHITECTURE 5 3 7 DAC ARCHITECTURE 6 4 OPERATING INSTRUCTION 7 4 1 Quick Start Guide 7 4 2 USB DRIVER INSTALLATION WINDOWS OS 12 5 SPECIFICATIONS 16 6 WARRANTY 17 ...

Page 3: ...equipment the mains supply is turned off Position the power cord and signal interconnects where they are not likely cause trip and fall hazard Do not use the DAC near water or place water filled containers on the DAC Entry of liquid into the DAC is hazardous and may cause electric shock and or fire hazard Do not place the unit under direct sunlight or heat source Do not remove any covers or try to...

Page 4: ...h independent high speed FPGA to facilitate the D A conversion by 4 sets of 0 01 R 2R arrays This design has very small linear error high decoding speed low digital noise not only to ensure that the audio signal is low distortion but also to ensure a very low background noise allow listener to enjoy the true music with quiet background We are confident Pontus sound quality far exceed its modest pr...

Page 5: ...th other I2S devices 3 3 PROPRIETARY STATE OF THE ART USB INTERFACE The PONTUS is equipped with the proprietary USB Audio Solution powered by STM32F446 Advanced AMR Based MCU DENAFRIPS redesigned and optimized circuitry allow the DAC to be used as high end DAC with computers streamers It supports 24bit 1536kHz PCM data stream and native decoding of DSD up to DSD1024 It comes with licensed THESYCON...

Page 6: ...e PCM 44 1kHz or 48kHz based audio data are up sampled to the maximum rate of PCM1411 2 or PCM1536 There is no up sampling of DSD audio signal 3 6 PROPRIETARY R 2R AND DSD DECODING ARCHITECTURE The PONTUS is equipped with 24Bit R 2R DAC to decode PCM data stream and 32 steps FIR analogue filters hardware decoder to decode DSD data stream These designs guaranteed the PCM format can be perfectly dec...

Page 7: ... memory using the low phase noise accurate FEMTO Clock located right in the DAC The processed data are sent to the final stage Discrete R 2R for DA conversion R 2R LADDER NETWORK The data bits are converted to analogue signal by the true balanced R 2R ladder network arrays The linearity of the conversion is guaranteed by the high precision thin film resistors with low thermal effect temperature co...

Page 8: ...eft to right a INPUT Input Press the buttons to select the input source namely CO1 CO2 OPT AES1 AES2 USB I2S Press to select the next right input Press to select the previous left input The respective input source LED shall be on to indicate that the input source is selected b PHASE Press the button to toggle Phase Output LED On Positive Phase LED Off Negative Phase c OS NOS Press the button to to...

Page 9: ... Input Sampling Rate LED status Base Sampling Rate Multiplier Input Format 44 1 kHz 1X 44 1 kHz 2X 88 2 kHz 4X 176 4 kHz 8X 352 8 kHz 16X 2X 8X 705 6 kHz 32X 4X 8X 1 411 2 kHz 48 kHz 1X 48 kHz 2X 96 kHz 4X 192 kHz 8X 384 kHz 16X 2X 8X 768 kHz 32X 4X 8X 1536 kHz DSD 1X DSD 64 2X DSD 128 4X DSD 256 8X DSD 512 16X 2X 8X DSD 1024 Table 1 Sampling Rate ...

Page 10: ... to enter configuration mode 2 Press the INPUT momentarily CO1 CO2 LED will turn on off CO1 On Dual AES EBU Input Enabled CO2 Off Dual AES EBU Input Disabled 3 Wait for 10s 4 DAC back in operational mode 3 I S Pinout Configuration 1 Select I S A Input 2 Press the Mute button once to enter configuration mode 3 Press the Phase button momentarily 1X 2X 4X will turn on off in a fixed pattern to denote...

Page 11: ...0 0 DATA DATA BCK BCK L RCLK L RCLK 0 0 1 DATA DATA BCK BCK L RCLK L RCLK 0 1 0 DATA DATA BCK BCK L RCLK L RCLK 0 1 1 DATA DATA BCK BCK L RCLK L RCLK 1 0 0 DATA DATA BCK BCK L RCLK L RCLK 1 0 1 DATA DATA BCK BCK L RCLK L RCLK 1 1 0 DATA DATA BCK BCK L RCLK L RCLK 1 1 1 DATA DATA BCK BCK L RCLK L RCLK Table 2 I2S PINOUT CONFIGURATION Figure 2 HDMI i2s Input ...

Page 12: ... connected 2 Analog Audio Signal Output Balanced output via XLR pin2 hot singled ended output via RCA The PONTUS is a true balanced DAC we recommend using balanced output whenever possible The RCA and XLR output are shared please use either of the output at a time It is not recommended to use both RCA and XLR output simultaneously 3 Digital Input Interface There are 8 Digital Input Interfaces name...

Page 13: ...io playback for Computer Audio System NOTE Mac and Linux OS do not require the USB driver Installation Guide Download the driver from the support page https www denafrips com support Do not connect the USB cable from the computer to the DAC Remove it before the USB driver installation Double click the DENAFRIPS_UsbAudio_v4 82 0 or the latest version to install the USB driver Follow the on screen i...

Page 14: ... DENAFRIPS CO LTD VINSHINE AUDIO PTE LTD SINGAPORE ALL RIGHTS RESERVED Figure 5 Default Installation Directory Figure 6 Preinstallation Successful ...

Page 15: ...IGHTS RESERVED Figure 7 Completed Restart the computer to complete the installation Connect the USB cable to the DAC Power on the DAC Select USB input The USB DAC shall be detected The driver status can be monitored as follows Figure 8 Taskbar Control Panel ...

Page 16: ...L RIGHTS RESERVED Select DENAFRIPS USB DAC as default Windows OS Soundcard Press Set Default button Properties of the DENAFRIPS USB DAC Direct Sound default format ASIO Buffer Size Playback software recommendation roon JRiver Foobar2000 Sonicstudio Amarra ...

Page 17: ...ges from 184V to max 253V Power Consumption 30W Frequency Response 0 70K Hz 3dB THD N 0 0025 1KHz A Weighted Output RCA 2 2 10 V RMS 1KHz Output XLR 4 4 10 V RMS 1KHz Supported Format DSD DSD64 All Input DSD64 DSD1024 USB I S Only Supported Format PCM 24bit 44 1 48 88 2 96 176 4 192 kHz All Input 44 1 1536 kHz USB I S Only S N Ratio 115dB RCA 114dB XLR Dynamic Range 117dB RCA 121dB XLR Stereo Cros...

Page 18: ...ichever later Defective Within Warranty Policy First 30 Days DENAFRIPS to bear both way shipping fee Within 1st Year Customer to bear one way shipping fee DENAFRIPS shall cover the return shipping fee Within Warranty Period Customer to bear both way shipping fee DENAFRIPS to repair at free of charge Out of Warranty Customer to bear both way shipping cost DENAFRIPS to provide repair maintenance ser...

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