1、Visual VU Meter: The Bluetooth amplifier features dynamic VU meter, its hand moves with the sound rhythm, providing real time music signal strength to help you adjust volume and avoid distortion while enhancing the device's technological appeal. 2、Adjustable Treble Bass: Support treble and bass adjustment, this amplifier allows you to create your unique music style, offering precise music tuning flexibility to meet your personalized music preferences. 3、Diverse Input Options: The amplifier supports multiple input methods, including Bluetooth, optical, coaxial, and AUX connections, catering to a wide range of input needs for a versatile listening experience. 4、Powerful Amplification Technology: Utilizing advanced pre amplification technology combined with a robust 200W output at 4 ohms, this amplifier delivers a powerful and immersive music experience. 5、Flexible Input Switching: With a 5 in 1 output switching capability, you can easily switch between input methods, allowing you to freely combine your devices according to different scenarios and requirements, including connections for powered speakers and subwoofers. Item Type: Bluetooth Amplifier with VU Meter Material: Aluminum Alloy Frequency Range: 20-20Khz Rated Output Power: 200w (Rated power 200W for 4Ω speakers; Rated power 100w for 8Ω speakers) Compatible Speakers: 10-200W rated power 4-80 Bluetooth Version: 5.3 Radio Corporation of America Input Level: 1.5-2.5vrms Radio Corporation of America Output Level: 2.2vrms THD: <1% /100k Signal to Noise Ratio: >99DB 1 x Amplifier 1 x Cord 1 x Adapter 1 x Instruction Manual 1 x Antenna