1. Compact size and portability Dimensions: 12.5 cm x 7 cm x 4 cm (4.92 in x 2.76 in x 1.57 in). Lightweight and easy to carry. 2. Durable and reliable Made from aluminum alloy material, sturdy and durable, with a long service life. 3. Wide compatibility HiFi stereo receiver amplifier that supports RCA and 3.5 mm AUX input. Suitable for car, computer, laptop, tablet, phone, TV, and more. 4. Clear stereo performance 12V powered mini amplifier with practical and powerful output. HiFi stereo surround sound quality with clear and delicate details. Use scenarios Incar audio upgrade: Connect to your car stereo via RCA or AUX to improve sound from a phone, MP3 player, or other portable devices. Desktop or laptop setup: Use with PC or laptop to drive external speakers or improve overall computer audio. TV or home entertainment: Pair with a TV, tablet, or streaming device to deliver better sound from external speakers.