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Trending Store 
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Descriptions: BANGLADESHI Digital Karaoke Amplifier OK339 DC 12-15VPT2399 OK339 Amplifier Circuit OK339 Digital Karaoke Amplifier DC 12-15V 3A Dual Power Low Noise Filter Circuit Module HiFi Audio Module
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 Karaoke Amplifier Board Module
- 1x 4 Pieces Nut
- Model: OK339
- Chip type: PT2399
- Working voltage: dual source 12V-15VAC
- 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.
- 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.
- 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
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