Key features and benefits - 12V power supply supported for convenient operation with common 12V sources - Power plug specification: 55x2.1 mm for reliable and standard connectivity - Front panel controls: power switch, bass adjustment, volume adjustment, treble adjustment for quick sound tuning - Product matching: a pair of 26 inch passive speakers included for a ready two-speaker setup - Wide compatibility: supports connection to mobile phones, computers, MP3 players, and set-top boxes What is included - Amplifier designed to be powered by 12V - A pair of 26 inch passive speakers Specifications and compatibility - Power supply: 12V - Power plug: 55x2.1 mm - Control buttons: power switch, bass adjustment, volume adjustment, treble adjustment - Speaker configuration: pair of 26 inch passive speakers - Inputs: compatible with mobile phones, computers, MP3 players, and set-top boxes Practical use scenarios - Music listening with a mobile phone or MP3 player in a living room or bedroom - Desktop computer setup for enhanced audio during videos, games, or music playback - Home entertainment with a set-top box to improve TV or streaming content audio in a small to medium room This description preserves the original specifications, functions, and included components, presented in a clear and customer-friendly format.