Powerful yet simple to use amplifier for a small audio setup Power and connection 12V power supply required DC power plug: 55X2.1mm Controls Power switch Bass adjustment Volume adjustment Treble adjustment Product Matching A pair of 26 inch passive speakers Supports connection to mobile phones, computers, MP3 players, and set boxes Key benefits Easy setup with a clear power and tone control layout Adjustable bass and treble to tailor sound for different content and room acoustics Compatible with widely used devices such as phones, PCs, MP3 players, and set boxes Paired with a pair of 26 inch passive speakers to create a fuller, louder audio experience Specifications you can rely on 12V power supply operation for energy efficiency and straightforward power needs Power plug specification 55X2.1mm for compatibility with common DC adapters Use scenarios Home entertainment: connect a set box or phone to enjoy enhanced TV or music audio through the 26 inch passive speakers Computer desk setup: drive computer audio and media playback with adjustable bass and treble for clearer music and videos Small venue or classroom: use with the pair of 26 inch passive speakers to provide background music or audible announcements in a compact space