【3 Frequency Control】By enabling left right channel balance adjustment, volume control, and 3 band equalization, you can effortlessly achieve the balance. Customizable sound levels are suitable for all types of music 【Aluminum Alloy Material】The 3 band equalizer is made from aluminum alloy, rustproof, sturdy, compact, and long lasting, which offers high strength and stable performance 【Isolated Boost Power Supply】The device features an isolated boost power supply that ensures signal purity and a wide dynamic range. With the isolated power supply, there is no concern about ground interference, even in car use 【Signal Processing】The signal processing circuit uses the operational amplifier, ensuring that your turntable's sound levels are boosted to speaker or stereo line level, providing better volume and higher sound quality with HIFI and low noise 【Multi Device Compatibility】This stereo equalizer is compatible with a wide range of devices, including electronic devices, turntables. Its output is suitable for speakers, subwoofers, post amplifiers, making it a perfect complement to any audio setup