20-20KHz Frequency Response: Offers a broad frequency range (20-20KHz) for clear and detailed sound reproduction. 2.0 Channel Stereo Output: Features a dual channel output for a rich, immersive audio experience. Dual AC12-18V Power Input: Supports a wide voltage range (12-18V) for stable and reliable performance. Wavetable Sound Module/Sound Effect Board Free/NE5532 Preamplifier Board: Equipped with the NE5532 chip, this preamp board delivers high-quality audio amplification. 20cm Extension Cord: Comes with a 20cm extension cord for easy installation and connection. Item Name: NE5532 Preamplifier Board Channels: 2.0 Power Input: Dual AC12-18V Frequency:20-20KHz Signal Input: Xh2.54mm /5.08mm Signal Output: Xh2.54mm/5.08mm Features: Treble+Mediant++Volume Extension cord length:About 20cm Color:As Shown Material:Electronic Component Package Contents: 1 set * amplifier preamplifier board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.