![Amazon.com: Preamplifier Low-Pass Filter Subwoofer Tone Board Tone Board Volume Control Amplifier Board, DC10-24V : Electronics Amazon.com: Preamplifier Low-Pass Filter Subwoofer Tone Board Tone Board Volume Control Amplifier Board, DC10-24V : Electronics](https://m.media-amazon.com/images/I/61qfDwMUEyL.jpg)
Amazon.com: Preamplifier Low-Pass Filter Subwoofer Tone Board Tone Board Volume Control Amplifier Board, DC10-24V : Electronics
![ERH India Bass Treble Pre-Amplifier Tone Board Audio Bass Treble Control Equalizer Board 3 Channels with Knob for DIY Electronic Components Electronic Hobby Kit Price in India - Buy ERH India Bass ERH India Bass Treble Pre-Amplifier Tone Board Audio Bass Treble Control Equalizer Board 3 Channels with Knob for DIY Electronic Components Electronic Hobby Kit Price in India - Buy ERH India Bass](https://rukminim1.flixcart.com/image/850/1000/ktlu9ow0/electronic-hobby-kit/r/m/v/bass-treble-pre-amplifier-tone-board-audio-bass-treble-control-original-imag6wrmhetccb6z.jpeg?q=90)
ERH India Bass Treble Pre-Amplifier Tone Board Audio Bass Treble Control Equalizer Board 3 Channels with Knob for DIY Electronic Components Electronic Hobby Kit Price in India - Buy ERH India Bass
![Electronic Spices 3 Channels Preamplifier Tone Board Audio Bass Treble Control Equalizer Board works on 12-0-12 transformer and better IC : Amazon.in: Electronics Electronic Spices 3 Channels Preamplifier Tone Board Audio Bass Treble Control Equalizer Board works on 12-0-12 transformer and better IC : Amazon.in: Electronics](https://m.media-amazon.com/images/I/71paFodteKL.jpg)
Electronic Spices 3 Channels Preamplifier Tone Board Audio Bass Treble Control Equalizer Board works on 12-0-12 transformer and better IC : Amazon.in: Electronics
![Amazon.com: Digital Preamplifier Tone Board, Upgraded 2 Channels Amplification Preamp Tone Board Equipped with NE5532 Chip, DC12V-24V Adjustable Treble Alto Bass Pitch & Total Volume with 3P Audio Wire : Electronics Amazon.com: Digital Preamplifier Tone Board, Upgraded 2 Channels Amplification Preamp Tone Board Equipped with NE5532 Chip, DC12V-24V Adjustable Treble Alto Bass Pitch & Total Volume with 3P Audio Wire : Electronics](https://m.media-amazon.com/images/I/61e7vQDXU2L.jpg)