7-segment Equalizer Tone Treble Mid Bass Adjust Mobile Computer Game Headset Ear Amplifier Audio Signal Preamplifier DIY

Features 7 section equalizing adjustment Range 12db 60HZ 150HZ 400HZ 1KHZ 3KHZ 6 5KHZ 15KHZ Composed of TI or ST original TL074Preamplifier Gain 4580 classic operational amplifier provides 5x amplification 14db The amplifier part of the Earphone adopts the 47 type earphone driver circuit composed of NE5532 Which can easily drive all types of earphonesInput impedance 20K output impedance 600 ΩThe 3 5mm input interface supports a 4 pole plug and the output is connected to a headset with a microphone Normal voice calls can be made on the mobile phone Another terminal with a lotus interface is availablePower Supply Between DC5V 12V the interface Specification is 5 5 2 1mm The Static Current of 5V Power Supply is about 390ma and that of 12V Power Supply is about 140maTips Input 3 5 cannot be the same as lotus mouth only one can be selectedOutput 3 5 and lotus mouth can be used at the same timeTips You can use the power bank or high quality charging head for power supply Poor charging head power supply may have AC sound Package Included 1 x Host1 x USB DC cable