Description:
The latest improved version, add volume control and rectifier circuit. AC and DC universal, DC input without distinction between positive and negative polarity, using the original fever class op amp AD828. Suitable for dynamic microphone, for card deck head, preamplifier of record player, Vinyl machine preamp and so on.
Working Voltage: AC 3V-17V or DC 6V-24V
Board Size: 50mm x 33mm (L*W)
Notice:
1, If it is for the card deck head, preamplifier of record player, vinyl machine preamplifier etc. it need to in parallel a 0.01-0.1UF capacitor in input to ground port, to reduce noise and improve low frequency.
2, If only use one channel, the other channel needs to be shorted to GND in input port, to avoid interfering signals.
Packing List:
1pcs x AD828 Preamplifier Board
2pcs x wire