![](https://ae01.alicdn.com/kf/HTB1ovj7DN9YBuNjy0Ffq6xIsVXaV.jpg)
Panel Description:
VOLUME: Microphone volume control
ECHO: reverb depth adjustment
DALEY: reverberation time adjustment
MAIN VOLUME: sound volume adjustment
Product include power supply
Finished microphone amplifier product
Include power supply
DC8V-DC16V
You can also buy the Finished microphone amplifier board. The link:
![](https://ae01.alicdn.com/kf/HTB1a31EQXXXXXX4aXXXq6xXFXXXw/223712258/HTB1a31EQXXXXXX4aXXXq6xXFXXXw.jpg?size=66187&height=150&width=200&hash=ab9a9ed82a8219d9a58d731bb8d20914)
![](https://ae01.alicdn.com/kf/HTB1Wx2FDKuSBuNjy1Xcq6AYjFXat.jpg)
This product is exclusive use stepless technology to achieve professional results KTV&x27;s. And the use of natural sound reduction circuit.
1 use automatic microphone mute circuit, when the microphone is not inserted, then put part of the circuit is completely isolated, without prejudice to music playback, background better
2 does not use those cheap single-sided circuit board production, as well as cross-seven domestic parts and low tree called imported, full board eight iron fly lines are known as fever. The large number of products using a 1% patch, real neat RC imported parts and production technology
3 dual precision op amp input JRC5532,
Core PT2399, analytical good, sound natural and delicate, the board is also provided with exclusive reverberation time adjustment.
4 does not use domestic cheap single joint potentiometer, all of Taiwan&x27;s seal double potentiometer in parallel. Long life several times
5 even without the use of karaoke , it is also a superior performance preamp, gold-plated input and output terminals with easy to use
power supply:DC8V-DC16V
Power Interface: outside diameter is 5.5MM, inner diameter is 2.1MM
package included:Finished OF1 2 Mics karaoke Player preamplifier x1 power supply x 1 ( can be used at AC110V-240V)
Potentiometer fuction( from left to Right): Mic Volume Reverb Depth Reverb time Main volume
![](https://ae01.alicdn.com/kf/HTB1_LU3kAZmBKNjSZPiq6xFNVXao.jpg)
![](https://ae01.alicdn.com/kf/HTB1nmBXXnhSXuNjy1Xdq6xYvXXa1.jpg?size=132831&height=704&width=800&hash=d7a0950fdbd600a0b9bb454a93d7391d)
![](https://ae01.alicdn.com/kf/H4a986a8c917d4ee0b91b43d6a88e4d30d.jpg)
![](https://ae01.alicdn.com/kf/H2e6c46585a464e5d89456077255f56afz.jpg)
![](https://ae01.alicdn.com/kf/H373883a7cc3343ff84413b2257349359K.jpg)
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