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Control range: 7-band sound equalizer control range of ±12dB The equalization bands are 60 Hz, 150 Hz, 400 Hz, 1 kHz, 3 kHz, 6.5 kHz, 15 kHz, consisting of TI or ST TL074. Basic parameters 7-band digital equalizer preamp amplifier, 4580 classic op amp provides 5x gain of 14dB; input impedance of 20K, output impedance of 600Ω. Compatible The dual channel digital equalizer ear amplifier part is composed of NE5532 type 47 headphone driver circuit, which can easily control a variety of headphone types and is high and low adjustable. 3.5mm Interface The digital car equalizer is a 3.5mm input interface that supports 4 pin connectors, the output is connected to a headset with microphone, which can be used for normal voice calls on mobile phones, and the other terminal has a group connection port. Aluminum Alloy Material The graphic car sound equalizer is made of high quality aluminum alloy, high strength, corrosion resistance, stable performance, DC5V-12V power supply, dual channel sound. › See more product details