Goodwin's High End


SOtM tX-USB PCI and tX-USBexp PCI-e USB Audio Output Cards

The SOtM has two audiophile USB output cards: a PCI version and the newer PCI-e version. These are both high quality USB audio output cards which incorporate a power line noise filter. They also have individual low noise regulators to power the USB devices attached, the onboard ultra low jitter clock, and the onboard PCI host controller. There is also the option of using the USB card's power connector (which is a 4 pin Molex) to supply it with either an external linear power supply or it can be run off of battery power. This USB audio card also has a switch to completely turn off the power on the USB cable.


PCI USB interface chip set
Compliant with USB 2.0
All ports can handle high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps)
32-bit 33 MHz host interface compliant with PCI specification revision 2.2
Supports 3.3 V PCI

Power input:
Input voltage: +12.0 V (+0.5 V,-0.5V)
Input current: 2A max on / off
4pin IDE power connector

USB port power:
Output voltage: +5.0 V (+0.5 V,-0.25V)
Output Current: 0.5A max
Over current protection: 1.0A at 20 C

Operating environment:
Operating temperature: 0 C ~ 40 C
Storage temperature: -10 C ~ 50 C
Operating & storage humidity: 10% ~ 90%

OS support:
Linux (kernel with high speed USB 2.0 support)
Windows 2000 SP4
Windows XP SP2 or higher
Windows Vista
Windows 7
OSX v10.x

Both short and long PCI trim plates




SOtM tX-USB tX-USB Owner's Manual

SOtM tX-USBexp Audiophile PCIe to USB Audio Card

The SOtM tX-USBexp is a high quality audiophile PCIe to USB audio card. This audio card has a unique design incorporating a new and improved ULNR (Ultra low noise regulator) for digital, clock, USB power circuit. Power input noise filters. PCI express slot noise filters. Extremely Low Jitter clock. Active noise canceller for clock power. You can also use the audio card's external power connector to bypass your computers internal power supply and feed the card with the SOtM mBPS-d2s Intelligent Battery Power Supply for an additional boost in performance.

SOtM tX-USBexp Audiophile PCIe to USB Audio Card

SOtm tX-USBexp Features
USB port
USB 3.0 compliant xHCI host controller
PCI express x1 Gen2 interface
Support for super-speed, high-speed, full-speed, and low-speed
USB port power on/off function
Over current protection
ESD protection

Power regulation circuit
ULNR - Ultra Low Noise Regulator
Automatic selected external power input
2nd stage noise filter for ULNR power source

Clock circuit
Ultra low phase noise clock
Specifically designed active noise reduction regulator
PPL power supply filter

Internal power input
Input voltage : +12.0Vdc(+0.5V, -0.5V)
Input current : 2A max
4 pin IDE power connector

External power input (not included)
Input voltage : +6.5V ~ +9Vdc
Input current : 2A max
5.5mm OD x 2.1mm ID DC adaptor jack

USB port output power
Output voltage : +5.0V(+0.5V, -0.25V)
Output Current : 1.5A at 20 degree C
Recommended output current 0.5A >

Operating environment
Operating temperature : 0C ~ 30C
Storage temperature : -10C ~ 50C
Operating & storage humidity : 10% ~ 90%

OS support
Linux (kernel with high speed USB 2.0 support)
Windows 7 or higher

Windows 7 driver disk
Short and long PCI trim plate

For info on the SOtM In-Line SATA Power Noise Filter click here.

For info on the SOtM In-Line Fan Power Noise Filter click here.

Info on the SOtM mBPS-d2s Intelligent Battery Power Supply.

Note: You can pair this to a Berkeley Alpha USB which is an outboard USB to AES-EBU converter/reclocker. Also for info on a custom silent music server click here.


What's NewAbout UsOur FacilityProductsSystemsRoom Design
LibraryGallery • UsedContents • LinksContact Us