1. No need for power supply design, direct plug and use, no loss of input and output signals, seamless switching. 2. This product is designed to switch between multiple stereo signal inputs to a common output device. Ideal for use with two stereo signal sources such as TV, MP3 player, CD player, video game console, mobile phone, tablet, computer, or record player, allowing output to a power amplifier or active speaker. 3. Dual stereo source switcher simplifies cable management by eliminating the need for frequent plugging and unplugging. Simply connect all input devices to the switcher and select the desired source easily. 4. Features RCA input and output connectors with a precise 2-position manual push-button switch. Power supply: None required, plug and play Frequency response: 20Hz - 20kHz Distortion: Less than 0.002% Insertion loss: Less than 0.01dB Signal gain: 0dB Signal-to-noise ratio (SNR): Greater than 98dB Input channels: 2 stereo input sources Output channels: 1 stereo output Dimensions: 69mm x 43mm x 39mm Color: Black Material: Metal Package Contents: 1 x Audio source signal selector Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual product. Measurement error allowed within +/- 1-3cm.