7-segment Equalizer Tone Treble Mid Bass Ear Amplifier Audio Signal Preamplifier
7 section equalizing adjustment Range +-12db,
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
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
- All package need to wait 30 days(US only need 7-10 days),Please take care it.Less than 30 days,we can't take a refund.
- If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please keep in touch with us and double check the return address before you return it.
- If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.
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Il 21-nov-2023 alle 10:31:45 CET, il venditore ha aggiunto le seguenti informazioni sulloggetto: