IOT-Audios JRC4558 Bass mids treble bluetooth Preamplifier Volume Tone Control Board Dual AC 12V - 15V With Bluetooth Audio Power Amplifier Board

This tone board includes 3 times gain boost including treble, midrange, bass, and volume control
Reasonable circuit board, low noise, beautiful component layout

Product name: NE5532/JRC4558 preamp tone board
Product model: Ink-preamp-BT
Power supply voltage double: 12VAC-15VAC
Channel type: dual channel and Bluetooth
Adjustment type:  Stereo Volume, treble, midrange and bass
Audio output: 3P JST terminal block
Power input: 3P JST terminal block