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Aurender UC100 USB-to-SPDIF Converter; Silver - The Music Room
GLA HU208 USB to SPDIF Converter
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USB to SPDIF Converter Toslink Coaxial DTS AC3 PCM 3.5mm Jack + 1.5m Optic Cable 782500024617 | eBay
Matrix Audio X-SPDIF 2 USB Interface
Aurender UC100 USB to SPDIF Converter at Sight+Sound Gallery | an Audiophile's Paradise
USB-SPDIF Interface – [180027] | Elektor Magazine
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M2TECH HiFace Two R USB Hi-End SPDIF Output Interface (RCA)
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USB TO SPDIF Converter XMOS XU208 Coaxial Optical Toslink Support Source Output | eBay
Peachtree Audio X1 Asynchronous USB to SPDIF Converter - Black - weboptimizers testing
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USB Sound Card Audio Adapter w/ Mic - USB Audio Adapters | StarTech.com