60HZ, 150HZ, 400HZ, 1KHZ, 3KHZ, 6.5KHZ, 15KHZ, Composed of TI or ST original TL074
Preamplifier 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 earphones;
Input impedance 20K, output impedance 600 Ω;
The 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 available;
Power 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 140ma.
Tips:
Input 3.5 cannot be the same as lotus mouth, only one can be selected
Output 3.5 and lotus mouth can be used at the same time
Tips:
You can use the power bank or high-quality charging head for power supply. Poor charging head power supply may have AC sound.
Package
1pc Host+USB DC cable
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On 21-Nov-2023 at 15:04:17 GMT, seller added the following information: