The sMS-200ultra is an upgraded network player equipped with a dedicated media player board and a high performance audio clock, born from SOtM’s years of experience.

 Improving upon the great reviews and user feedback on the sMS-200, the sMS-200ultra has been designed to include the sCLK-EX clock — the heart of this superior piece of digital audio equipment. This new combination brings dramatic improvement to your sound. If you’ve been enjoying the great performance of the sMS-200, the addition of the sCLK-EX will enhance your experience beyond the usual limitations of traditional small source devices.

 Use the master clock connector option to sync the sMS-200ultra with an external master clock device such as a Rubidium clock. This feature has the potential to redefine your perception of sound from small network players.

 The sMS-200ultra is a digital technology device, but because it is based on SOtM’s deep understanding of analog technology, it can be defined as one of the few high-performance digital audio devices that performs superior analog sound.

 With cutting edge technology providing the newly adapted heart to the sMS-200, the sMS-200ultra is born. Impress yourself with truly beautiful music.

sMS-200ultra Neo

 The sMS-200 Neo is the updated model to our previously very successful sMS-200. While the original model sounded very neutral and balanced, the changes brought about by the updated sMS-200 Neo will mostly be perceived as a more relaxed presentation. Although the standard sMS-200 is already an overachiever, the sMS-200 Neo retains this while still adding an extra dose of musicality to the party.

Get a 60days free trial Roon license!

Plus, get a 1 year Roon license at the very special price!


Key Features

  • Roon Ready
  • SqueezeLite
  • DLNA Renderer
  • MPD
  • Logitech Media Server
  • HQ Player NAA
  • Shairport



Paul Rigby

(The Audiophile Man)



sMS-200 Realization award by


Audio player
 Roon Ready
 DLNA renderer
 Music Player Daemon(MPD)
 Logitech Media Server(LMS)
Audio feature
 PCM 32bit/768kHz max, DSDx512 max
 Ultra Low Noise Regulator
 Active Noise canceller
USB port
 High-End audio grade USB port x 1
 USB 2.0 port x 2
 Output voltage : +5.0V(+0.5V, -0.25V)
 Over current protection : 0.8A at 20°C
 Recommend output current : 0.5A >
Ethernet port
 RJ45 Gigabit Ethernet
External power input
 Input voltage : 9Vdc(Optional 12Vdc or Optional 6.5Vdc ~ 8.5Vdc)
 Input current : 2A max
 5.5mm OD, 2.1mm ID adaptor jack
Internal reference clock
 sCLK-EX2425 board
External master clock input : Optional
 Input frequency : 10MHz
 Isolated clock input
 50Ω BNC connector x 1
Operating environment
 Operating temperature range: +10 ~ +30℃
 Storage temperature : 0 ~ +40℃
 Operating & storage humidity : 10% ~ 90%
 106 x 48 x 227(mm)
 1.5kg >


 For a stable network connection, we recommend using a gigabit speedy router and above CAT6 Ethernet cable, and we proudly and strongly recommend the dCBL-CAT7, iSO-CAT6 or dCBL-CAT6 in such network audio system

  Also, the dedicated USB audio device as like sHP-100 or sDP-1000EX can present most detailed, high textured sound and high resolution with sMS-200. And to enhance the quality on USB output, we recommend using tX-USBhubEX together with sMS-200, then you will be able to hear  the upgraded and improved sound quality .

Just in case, the external USB storage is detected in LMS web interface as USB1 or USB2 but if you can’t find the music file, go to LMS Settings -> Basic settings tab  -> Rescan Media Folders and click Apply. And then the music file will be shown and able to play.

If still having the problem after you apply the above method, please stop and start Squeezelite function on Eunhasu Web GUI.

Thank you.

We recommend using Chrome browser to enter Eunhasu Web GUI. 

Open Chrome browser on a PC or smart device and connect to “http://eunhasu” (without quotation marks) or its IP address.

On MAC OSX, connect to “http://eunhasu.local” (without quotation marks).

Depends on your network environment, such symptom can be appeared.

Please check your network environment is stable.We highly recommend using a gigabit speedy router and above CAT6 Ethernet cable for the stable network audio system, also if you use a bundle type of router, we don’t recommend using it.

If you have such symptom while using Roon Ready, please  adjust the buffer setting or resync delay on Config Roon Ready or on Roon settings.


Roon settings

 Roon is the most engaging, enjoyable way to browse your music.

 Being Roon Ready means that SOtM sMS-200ultra network players transparently discover and connect to Roon, with no network configuration, with bitperfect delivery of audio to your dac.

 Together, Roon and SOtM deliver the power, flexibility, and performance benefits of networked audio, with the easiest setup and highest reliability available.

SOtM offers a 60 day free promotional subscription to Roon for whom purchased sMS-200, sMS-200ultra or sMS-1000SQ.

Also, we offer a 1 year Roon license at the special price for whom purchased sMS-200, sMS-200ultra or sMS-1000SQ, please contact us and grab this great chance!

Email us : or

  1. The sMS-200ultra uses the latest Linux kernel and it has a compatibility issue with MYTEK DIGITAL STEREO192-DSD DAC USB2.0 .
  • An external USB storage device in NTFS and FAT format are supportive from Eunhasu V0.2.7.
  • Multi partitions cannot be mounted normally, we recommend connecting 1 partition USB storage device.
  • An external USB storage device can be used in Squeezelite or MPD/DLNA feature.
  • Recommend using the USB storage device which get powered separately.

sMS-200ultra supports USB Wi Fi feature, the USB Wifi dongle should uses RTL8812AU chipset to work with sMS-200ultra WiFi feature.

Check here about how to use sMS-200 WiFi feature.

If you have a problem to use Librespot on Eunhasu web gui, please try to remove and re-install the Librespot again. If you would still have the problem after the reintallation, please contact us via email,

To turn on the sMS-200ultra properly, press the front led about 1 second. And to turn off the sMS-200ultra, click the System power off button on the System setup icon or press the front led about 1 second. 

Do not press the front led in succession, this behavior makes the unit turn on and off repeatedly and seems the unit works abnormal. Once press the front lend, and wait around 3 minuets.