2 Way Digital Audio Converter Bi-direction RCA Coaxial to Optical SPDIF Toslink | eBay
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Bi-Directional 3.5mm Jack Audio Switch Selector 2 In 1 Out / 1 In 2 Out Noiseless Analogue Stereo Audio Switch with Volume Control, Sound Distribution Splitter Box for Speakers Headphones PC - Newegg.com
FILA-208 | Mode Audio 2 x 8" Line Array Loudspeakers, w/ Full-Range / Bi-Amp Switchable, Black – Sound Town