Product parameters:Power supply :DC5V-12VInterface :DC5.5x2.1/3.5mmInput impedance :20KOutput impedance: 600ΩEqualization circuit control range :±12dBBalance frequency band :60Hz, 150Hz, 400Hz, 1KHz, 3KHz, 6.5KHz, 15KHz1, seven stage balance adjustment range ±12db, composed of TI or ST original TL074 circuit2, 60 hz, 150 hz, 40 ohz, 1 KHZ, 3 KHZ, 6.5 KHZ, 15 KHZ, seven frequency knob in the middle of the origin, counterclockwise for attenuation, clockwise for ascension; 60HZ for bass, 150HZ for bass, 400HZ for bass, 1KHZ for alto, 3KHZ for treble, 6.5KHZ for treble, 15KHZ for super treble, according to personal listening preferences to adjust.3, pre-amplification gain :4580 classic op amp provides 5 times amplification (14db); The earphone part adopts the 47 earphone driving circuit composed of two NE5532, which can easily drive all types of earphones from 16 euro to 600 euro; Input impedance 20K, output impedance 600 OHMs;4, 3.5mm input and output interface support 3 /4 pole plug, headset with microphone can be normal voice call on the phone, suitable for game lovers and music lovers, another group lotus interface terminal is available5. Power supply: between DC5V-12v, the interface specification is 5.5*2.1, 5V power supply is static current 390ma, 12V power supply is about 14Oma, power consumption is about 1.8w.Package Included:1.*EQ-7 Audio Signal Headset Amplifier 1*USB DC Cable
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