CHINESE PT2399 OK339 Amplifier Circuit Board For 10W 10W Speaker Dual Channel OK339 Amplifier Board Power 12-15V PT2399 Tone Board Preamp Tone Controller 5 Volume Amplifier Audio Speaker Low Noise Filter Circuit

Description: CHINA PT2399 OK339 Amplifier Circuit

CHINESE PT2399 OK339 Amplifier Circuit Board For 10W 10W Speaker Dual Channel OK339 Amplifier Board Power 12-15V PT2399 Tone Board Preamp Tone Controller 5 Volume Amplifier Audio Speaker Low Noise Filter Circuit

Microphone karaoke amplifier echo circuit PT2399 – OK339 is an audio signal and karaoke echo amplifier circuit with two-way audio mixing technology that can adjust music volume, microphone volume, echo by potentiometer on the circuit .

OK339 karaoke microphone amplifier circuit supports 2 wired microphones, with the volume and echo function to help you adjust the desired echo. In addition, the circuit is also integrated chip opamp 4558D support volume bass treble adjustment.

-OK339 karaoke microphone echo circuit uses dual sources from 12V to 15V, available bridge diode, so you can use AC or DC. The circuit also extends a 12VDC source that can connect auxiliary devices such as decoding circuit, wireless MIC, USB receiver Bluetooth … more convenient to use.

Specification:

Model: OK339
Chip type: PT2399
Working voltage: dual source 12V-15VAC 3Amp
Extended power: 12V output
Interface: 5.5MM outer diameter, 2.1MM inner diameter
Microphone jack: 2 Jacks 6.5mm
Potentiometer specifications: 15 / 20mm
Using double precision TL074 as input operational amplifier, strong analysis ability, natural sound effects,
PT2399 is responsible for echo processing.
Added 5V output to connect to the Bluetooth decoder board for easier use.
Input: 3 pin jack header – music signal input
Output: 3 pin Jack header – music signal mixed with microphone signal
Dimensions: 15.7 x 8.8 x 3cm
Weight: 120g

Features:

Interface: outer diameter 5.5MM, inner diameter 2.1MM
Using double precision TL074 as input operational amplifier, good analytical ability, natural sound effect,PT2399 is responsible for sound processing.
Using the microphone automatically mute circuit, when the microphone is not inserted, the part of the circuit is completely isolated and does not affect the reproduction of the music.
Using step less adjustable technology.
Increased 5V output to connect Bluetooth decoder board, more convenient to use.
Use the microphone to automatically mute the circuit. When the microphone is not inserted, the circuit part is
completely isolated and does not affect the music reproduction.
Using step less adjustable technology.

Package Includes:

1x 1 Piece China Karaoke Amplifier Board Module
1x 4 Pieces Nut