This is a mini 2-channel HiFi stereo audio power amplifier designed for cars, motorcycles, boats, MP3 players, and other audio devices. The compact amplifier features bass, treble, and volume controls, making it easy to install and use. Enjoy high-quality sound performance in a small form factor.Features: - Full aluminum alloy housing helps reduce electromagnetic interference - High-power audio amplifier chip delivers 30W x 2 RMS output power - RCA and 3.5mm audio inputs support a wide range of audio sources including smartphones, DVD players, computers, MP3/MP4 players, and more - Dual speaker output terminals for easy wiring - Adjustable high and low-frequency controls - Tone/Direct switch allows for customized sound with independent bass and treble adjustment or bypasses enhancement to pass the original audio signal unchanged Specifications: - Input impedance: 47 kOhm - Speaker impedance: 4 - 8 Ohms - Compatibility: Mobile phones, MP3 players, computers, and other devices with 3.5mm audio output - Volume control: Yes - Connection type: Wired - Audio input interfaces: 3.5mm audio jack, RCA input - Supported audio sources: Electronic devices equipped with 3.5mm headphone jack - Material: Aluminum - Frequency range: 20Hz - 20kHz - Total harmonic distortion: < 0.4% - Signal-to-noise ratio: >80dB - Frequency response: 20Hz - 20kHz - Output power: 30W x 2CH RMS - Input voltage: 12-13.5V DC, 3A - Dimensions: Approx. 14 x 9 x 4.1cm (5.5 x 3.5 x 1.6 inches) - Color: Black - Package weight: 289g Package List: - 1 x Power Amplifier - 1 x User Manual