Feature:1. MULTI INTERFACE: Sound amplifier has 3.5mm AUX or stereo RCA input and stereo RCA output, the output is raised to the level needed to drive the amplifier or speakers.2. COMPATIBLE: The stereo amplifier is compatible with most low volume sound sources such as for iPods, phones, TVs, MP3 players, and portable CD players, computers, video games, and more.3. ANTI INTERFERENCE: Compact sound amplifier, shielding electronics from electromagnetic interference and noise suppression. Exquisite appearance, compact all metal design, durable.4. MULTI APPLICATIONS: Multi functional sound amplifier for home stereo systems, mixer or speaker setups, karaoke, recording, parties, live stage events and many other scenarios to increase output levels.5. PLUG AND PLAY: Stereo speaker headphone amplifier, easy to set up, no need to install special software, apps or drivers, a true plug and play sound adapter, volume controller.Specification:Item Type: Stereo AmplifierMaterial: Aluminum AlloyProduct Size: Approx. 90 x 38 x 38mm / 3.5 x 1.5 x 1.5inFeatures:This volume controller input and output are stereo, usually used to control small signal controls, installed between the sound source and the preamp or between the preamp and the amplifier, strings in the sound loop. Input, output is 3.5mm/0.1in, AUX or RCA jack.Package List:1 x Stereo AmplifierNote:Manual measurement, please allow some errors.