1、HIGH POWER: Power amplifier at a maximum power of 20Wx2 to obtain excellent amplified sound. Ideal for karaoke, home, car, theater sound surround sound system. 2、BLUETOOTH CONNECTIVITY: Bluetooth stereo amplifier receiver is Bluetooth compatible with a wireless range of 40 feet or more without the hassle of receiver pairing. 3、FRONT CONTROL PANEL: Car power amplifier has front panel buttons and rotary control center. Compatible with smartphones, tablets, for iPhone and laptops. 4、VOLTAGE AND CURRENT: Power supply requires 12V, current 2‑5A, independent adjustment of treble and bass. 5、APPLICABLE SPEAKERS: Stereo power amplifier can be connected to 4‑16Ω speakers, with clear sound and lossless music playback, suitable for car and home. Item Type: Mini Power Amplifier Material: Aluminum Alloy U Disk Or Memory Card Playback Format: Support MP3 Format, Lossless Format Music PE, FLAC, WAV U Disk Or Memory Card: Maximum Support 128G (not Included) Radio Frequency Band: FM87.5‑108Mhz Output Channel: 2.0 Bluetooth Version: Bluetooth V5.0 Output Power: 20Wx2 Speaker Impedance: 4‑16Ω Frequency Response: 20Hz to 20KHz Minimum THD: <0.4% SNR: >85dB Iinput Sensitivity: 220mV Intput Impedance: 47Kohm Remote Control Battery: 1 x CR2025 Coin Cell (included) Remote Control Battery Capacity: 240mAh 1 x Power Amplifier 1 x Power Adapter 1 x Instruction Manual 1 x Remote Control