TL074 Audio Preamplifier Board Bass Balance adjustable Audio Preamp Board PT2399 Bluetooth-compatible Tuning Board

Features:With two microphone inputs, it can be compatible with electret microphone. Two 200UF 25V filter capacitors. PT2399 integrated chip is used to process echo sound effect. Tuned for instruments field effect four operational amplifier TL074, responsible for audio signal amplification and sound effect processing. Add 5V output terminal, which can be linked to Bluetooth-compatible USB decoder board. Specifications:1xAudio Preamp Board Note:Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.Package includes:Working Voltage: Dual AC18~24V Output Power: 3x80W Frequency Response: 20HZ-30KHz Size: 15x16.5cm/5.90x6.49inches