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DT-21 - Digital Optical Audio Switcher

The Digital Optical Audio Switcher from Cypress Technology is designed for the audio signal selection from two digital optical inputs to one output using TOSLink (Optical Fiber) cables. The Optical Fiber cables connected to both ends of the unit can run up to 5 meters while still providing reliable and lossless audio signal transmission. The Cypress product is compact and easy to install which makes it a very handy gadget recommended for either home or professional audio switching.


  • Supports S/PDIF standard of digital audio transmission.
  • Supports uncompressed 2-channel LPCM (Linear Pulse Code Modulation) audio signal.
  • Supports compressed 2-channel and multi-channel Dolby and DTS audio signal.
  • Provides electromagnetic-noise-free transmission.
  • Easy to install and simple to operate.

Digital Optical Audio Switcher - Front View Digital Optical Audio Switcher - Back View
Download Manual PDF Manual