| Seven-band equalization circuit control range ± 12db, 60HZ,150HZ,400HZ,1KHZ,3KHZ,6.5KHZ,15KHZ, by TI or ST original TL074 composition. Pre-amplification gain: 4580 classic op-amp provides 5 times amplification (14db); Ear amplifier part of the NE5532 composed of 47-type headphone driver circuit, easy to drive all types of headphones; Input impedance 20K, output impedance 600 ohms; 3.5mm input interface supports 4-pole plug, the output connects to the headset with microphone, use on the cell phone can be a normal voice call, the other has a group of Lotus connector terminals are available; Commodity parameters Product material: aluminum alloy Power supply: DC5V-12V Interface | |