alvin1118

Customer Review: ;D

Customer setup:

Hello guys! Good evening from hot and humid Singapore! (Yeah, our weather here isn't as good as RU ) Yes, indeed. The initial planning is to make this as a pure DAC. Headphone amp is a bonus on top. Don't get us wrong, we did not take lightly on neither the DAC design nor the headphone amp design. Both DAC and Headphone amp section are well-thought-out and well-designed. The results of this is, very quiet background (almost non-audible even with very sensitive IEM like UE TF10vi at the loudest volume). It's not that the gain is low, it was because the careful and smart way of the PCB grounding design to eliminate noises! Look carefully in the PCB design, there are some magic in there On the volume control, it's Soekris design to make it such away that the initial volume will be low, and subsequently after 10:00 will be higher. I've tested and confirm this using Audio Precision 525 sound analyzer You can not go wrong with this DAC, the famous Lampizator Atlantic (Euro 4k?) uses the same technology in there as well. p/s: funky77, what's your DAC serial number? I can send the Audio Precision 525 test report to you. Each DAC is carefully tested with AP525 prior it leaves our factory! Many thanks. Sincerely, Alvin Chee VINSHINE AUDIO

Customer setup:

Guys, I was referred by a customer to this website! Happy and surprised to see my DAC is being discussed here! The long waited DAC has arrived! Some of the bros around the world (S'pore, USA, Japan, Ukraine etc) had collected the DAC from me. Allow me to start this thread to share some info of the play-ability of the Soekris R2R DAC. The Soekris R2R board has a built-in uManager, whereby user may program / parameterize the DAC setting (particularly the Filters) to obtain the desire sound by changing the filters selection. The RS-232 serial port is available at the rear panel, you'll need the following to get into the uManager: 1. Computer (Windows based preferred) 2. USB to RS-232 Converter (most computer nowadays doesn't come with this port, you will need a converter) 3. ExtraPutty Software: Link here 4. Filters file compiled by others (or you may compile your own if you know some software skill!) There are details guide all over the internet to guide you how to connect the computer to the Soekris DAC. I'll just point out a few key steps: 1. Connect USB to RS-232 Converter to the computer 2. In Device Manager, configure the RS-232 port baud rate etc to (115200, 8, n, 1), take note of the COM port # 3. Connect the RS-232 to the RS-232 port at the rear panel of the DAC 4. Power On the DAC 5. Launch ExtraPutty, select Serial connection, the COM port and key in the baud rate, then click Open 6. The following screen will be shown: 7. Type "+++" (the command to call out the uManager), the command line manual will be shown: 8. Now, you'll see the firmware of the Soekris DAC. All DAC is shipped with latest firmware v1.06 9. Have your desire firmware/filter files ready, key in "download" on the cmd line screen 10. While the download is waiting for a file to be transfered, in ExtraPutty windows, select File Transfer -> Xmodem 1K -> Send. Browse to the firmware/filter file, and you're ready to transfer! 11. When the transfer is completed, you'll see the following display: 12. Type "Set Filter" to change the type of filters. In general, you can choose the following. It depends very much on the type of filter file you loaded to the Soekris DAC. T set filters = Linear set filters = Mixed set filters = Minimum set filters = Soft These are some of the useful link online you may like to refer to: 1. Access uManager 2. Soekris Official Site for Firmware Updates 3. Filters discussion thread @ diyaudio That's about it. Have fun & enjoy the music! Many thanks. Rgds, Alvin Chee from Singapore