SW1X USB I SPDIF Converter

SW1X Audio Design™ USB I Performance Level 1 USB to SPDIF Converter


USB I is based on a Valve Master Clock and Valve SPDIF Output Stage, which enables the digital source to sound more naturally closer to the analogue.

Signature version is available on custom built to order basis only.

 DAC sounds only as good as the digital transport is.


20160609_155822 20160609_155636 20160609_174450


SW1X Audio Design™ USB I Interface Features:

  • Specially selected and harmonically matched component & material quality
  • Master clock is based on low noise EC88 triode tube powered by a separate transformer and is output transformer de-coupled from the rest of the circuit
  • Power supply of valve master clock is valve rectified
  • Custom Shunt regulated power supply based on a Germanium transistor for the USB/SPDIF receiver/transmitter
  • 2 separate power transformers: one for the master clock and one for the USB receiver / tube S/PDIF digital signal output stage
  • E180F tube buffered S/PDIF output stage
  • Finest high end audio components everywhere: Silmic, Cerafine, AN standard electrolytic capacitors, Telefunken diodes, Allen-Bradley carbon resistors, pure silver wire and silver plated RCA connectors
  • Plug’n’Play with USB OTG- no drivers required for Mac, Windows, Linux and Android operating systems (works with Samsung Galaxy and Android TV box, iPad 3)
  • Asynchronous USB data transfer mode (sounds best with a dedicated, unpowered USB interconnect such as SW1X AERO 5 USB)
  • Bit perfect data transfer with Kernel streaming, ASIO and WASAPI supported
  • Resolution 16/24 bit, 32KHz, 44.1KHz, 48KHz, 88.2KHz, 96KHz (higher resolution than 24 bit is not supported by S/PDIF anyway)
  • 110/115/230/240V AC mains transformers


Reviews and customer’s feedback can be found here


In order to maximise the quality of sound, we recommend to pair the SW1X USB I converter with the SW1X DAC I.

20160406_163640 20160406_165846



Dimensions: Height (mm) 130 x Width (mm) 220 x Depth (mm) 311

Weight (kg): 4.6

Max Power Consumption (W): 22

Output Impedance (Ohms): <1

Tube Compliment:  EC88, EAA91, E180F



We do not recommend purchasing a key system component without first auditioning it carefully, which is why we have demonstration rooms and a flexible home loan policy.

However in certain situations it can be difficult for people to get to our showroom and for those instances we can offer at mail order service.

For demonstration and ordering click here

Order Form

Translate »