1、WIDE CONTROL RANGE: 7 band sound equalizer adopts seven band equalization circuitry with a wide control range for flexible adjustment of sound effects. 2、IMPROVE SOUND QUALITY: Preamplification gain provides powerful sound amplification to enhance sound quality. 3、PREMIUM PERFORMANCE: 7 band car sound equalizer adopts headphone driver circuitry to drive all types of headphones, providing superior sound experience. 4、MULTIPLE INTERFACE SUPPORT: The car sound equalizer supports multiple input and output interfaces for easy connection to various devices. 5、ALUMINUM ALLOY MATERIAL: Car sound equalizer is made of premium aluminum alloy, which is sturdy and durable, and also has excellent heat dissipation performance. Item Type: 7 Band Sound Equalizer Material: Aluminum Alloy Power Supply: DC5V-12V (Power Supply Is Not Included) Interface Specification: 5.5x2.1 Equalization Circuit Control Range: ±12db Equalization Band: 60HZ,150HZ,400HZ,1KHZ,3KHZ,6.5KHZ,15KHZ 1 x Sound Equalizer 1 x Charging Cable