You may have heard or told “it sounds analog” or “it sound musical” when listening to very good sound.

 Such expressions have been used to describe the sound that is close to the real charm in the actual performance stage or that is richly expressed in musical nuances rather than realistic charm. However, whether it is the former or the latter expressions, the meaning of these expressions could only make sense when the feelings of very dedicated and dynamic live performance reach to our ears and touch our mind.

 However, with most audio systems, it is very difficult to experience such real charm or musical nuances, and in fact even it is also hard to reach to the sound with the ultra high-end audio systems too.

 So SOtM, to overcome such situation, has been developed from SATA filters, tX-USB card series and other equipment since for the first time when people got into computer audio which have settled into the essential part of digital audio now days, but still it is a fact there is a lot to overcome to improve sound quality.

 Facing up to the fact, the tX-USBUltra is designed to reach to the goal which improves sound quality. It works as a hub by receiving and distributing USB audio signals, but regenerating the USB AUDIO signal by the high-performance super clock module, sCLK-EX, installed inside to the product, so that sound could be superior to any other USB audio product and step into the upgraded sound.

 The mid-low range sounds very deep, detailed and earnest, the high range sounds not distract but extremely delicate and open, and especially the very low range gives you transparency you have never heard before and gets you very natural and solid texture of performance.

 The sound improvements with tX-USBUltra can be came out even in the ultra high-end audio system, it can be simply judged by the best USB audio device up to date.

 Whatever is, it is very difficult to go beyond any limit in any field. At the heart of this product is the built-in super clock, sCLK-EX, which has been developed over the years, allowing you to experience a whole new range of sound and introduce you to go beyond the sound.

 The tX-USBultra would show how to upgrade the sound quality and improve the dignity of music by in-depth research into advanced audio technology.

Key Feature

  • USB audio signal regenerated by sCLK-EX
    • Custom designed ultra low phase noise oscillation circuit
    • Isolated differential clock signal circuit
    • Wide operating voltage input range
    • Ultra low noise regulator circuit
    • Optional 10MHz master clock input
  • 2 ports USB hub
  • USB port power ON/OFF switch



Paul Rigby

(The Audiophile Man)



sMS-200 Realization award by 6moons.com


Indicate LED
  Power x 1
USB host interface
  Type B USB connector
USB output Ports
  Type A USB 2.0 connector x 2
  USB power on/off switch
USB interface chip set
  USB 2.0 Compliant HUB controller
  HS(480 Mbps), FS(12 Mbps), LS(1.5 Mbps) support
Internal reference clock
  sCLK-EX12 board
External master clock input : Optional
  Input frequency : 10MHz
  Isolated clock input
  50Ω BNC connector x 1
Power regulation circuit
  Custom designed ultra low noise regulator circuit x 5
  Standard ultra low noise regulator circuit x 1
  Active noise canceler circuit
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
USB port output power
  Output voltage : +5.0V(+0.5V, -0.25V)
  Over current protection : 0.8A at 20°C
  Recommend output current : 0.5A >
Operating environment
  Operating temperature : +10 ~ +30℃
  Storage temperature : 0 ~ +40℃
  Operating & storage humidity : 10% ~ 90%
  106 x 48 x 227(mm)
  1.5Kg >


I’m already using the sCLK-EX or sMS-200Ultra, the tX-USBultra will bring the better result?

 Yes, even though the sCLK-EX is installed into the host device as like a PC , server and player or CD player, sMS-200, etc, the signal is transferred through the tX-USBultra again and it brings much detailed sound solution. And such reason, tX-USBultra is highly recommended to use all USB audio devices.

What is the master clock option?

 The master clock connector is going to be installed to sync the external master clock(10MHz) such as Rubidium clock and connected by 50ohm BNC cable.

What is an optional 12.0Vdc?

 The tX-USBultra requires 6.5 ~ 9 voltages. But if your power supply provides over 9V, you can change the standard power requirement to the optional 12.0V, and then you can use above 9V ~ 12V power to tX-USBultra.

 The 12.0V power option doesn’t provide the 9V/2A wall adapter in the package.

 Please be noted, if you change the standard power to 12.0V power option, the power supply which outputs upto 9V is not recommended to use, because of some malfunction could be caused.

Is there a compatible issue?

 Nothing has been reported till now. We will update the news if there is any.

The driver installation is required?

Not at all. Without installing the driver,  the tX-USBultra is recognized and operating on Windows /Linux / Mac OS.

Can I use 2 USB ports at the same time?

 If you use 2 x USB output ports at the same time, sound might be degraded, so that we recommend using 1 x USB output port.