| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More |
|---|---|---|---|---|---|
| Price /Unit | $21.79 | $21.34 | $20.67 | $19.78 | Contact US |
2399 Karaoke Delay Reverb Preamplifier Board Microphone Preamp Tuning Motherboard Support Dynamic mic Input
Features:
- Support dynamic microphone input, instrument input, with delayed reverberation function.
- The delayed reverberation section is relatively complete, including delay size, time, and number of repetitions.
- The microphone instrument section has balanced adjustment for high, medium, and low frequencies.
- The four main adjustment potentiometers are exposed, while the other potentiometers are hidden, which can reduce the length of the circuit board and prevent others from adjusting them randomly.
- Equipped with a wireless microphone receiving board interface, convenient for external receiving boards.
- Two output interfaces have been designed. The low impedance output is suitable for connecting to a pure power amplifier board, while the high impedance interface can be connected to a combined power amplifier board with a front-end, directly connected to the audio input port without affecting the original function.
Specification:
- Power supply: DC12V, built in negative power conversion, with reverse protection
- Working current: 90mA
- Microphone amplification gain: 36dB
- Instrument amplification gain: 20dB
- Music section amplification gain: 14dB
- Equalization adjustment range: ±15dB
- Low impedance output: 3Vrms
- High impedance output: 0.7Vrms
Package Included:
- 1 x Board
