<b>Features:</b><br> 2-IN-1-OUT (switch audio sources) / 1-IN-2-OUT (switch audio outputs)<br> Input ( RCA) connections: Computer / Phone / Music player. etc.<br> Output ( RCA) connections: Active speaker / Headphone / Amplifier. etc.<br> High quality volume control knob; Smoothly control the volume<br> Mute button; Mute the device with just one key; Very useful for special conditions<br> A / B button; Can conveniently select the device you want to use as the audio input or output<br> No power and additional software required<br> Hot-swappable (no need to reboot devices)<br> Compact and super mini size; Easy to place and suitable for your desktop and office <br> <br> <b>Parameters:</b><br> Interfaces: 3 * RCA jack<br> Knob and key: 1 * volume knob; 1 * A/B selector; 1 * mute botton<br> Dimensions: L82 * W55 * H20 mm<br> Weight: 100g<br> <br> <b>Packing List:</b><br> 1 * audio selector (audio cable not included)<br>