The Digital 2-way audio converter is a Coaxial / Toslink audio converter, compact and convenient. It accepts S/PDIF audio signal input through either Coaxial cable or Toslink cable, and passes the signal (as is) to both its coaxial and Toslink output ports. Optical to Coaxial Audio: This bi-directional digital audio converter splits the optical signal from your optical source (such as Blu-ray Player and Satellite Receiver) to your Speaker or Amplifier, providing both optical and coaxial audio output simultaneously. Coaxial & Optical Audio Adapter: It splits the coaxial signal from your coaxial source to your Speaker or Amplifier, providing both optical and coaxial audio output at the same time. Simply use the switch on the side of the converter box to select Optical input or Coaxial input. Long-distance Transmission: With a built-in amplification chip, this dual-way audio converter can also function as an audio signal repeater, extending the transmission distance. Color: black Material: Metal Package Contents: 1 * Bi-directional Digital Audio Converter 1 * USB Power Cable Only the above package content is included; other products are not included. Note: Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.