BANGLADESHI 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

Descriptions: BANGLADESHI Digital Karaoke Amplifier OK339 DC 12-15V

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

Package Includes:

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