I2C - THREE BAND DIGITALLY CONTROLLED AUDIO PROCESSOR

This audio controller is perfect for DIY audio enthusiasts. Use this to build your own arduino controlled gainclone or other amplifier. Use your arduino or raspberry pi to select input source (4 inputs), gain, bass, mid range, treble, volume. It is based on the TDA7439.

It is a tested DIY product, I have tested all the functions to make sure it works. Male headers will be included separately.

This board will give your DIY amplifier more functionality and a professional appearance.

Features :

• Input multiplexer
• Four stereo inputs
• Selectable input gain for optimal adaptation to different sources
• Single stereo output
• Treble, mid-range and bass control in 2-dB steps
• Volume control in 1-dB steps
• Two speaker attenuators: two independent speaker controls in 1-dB steps for balance facility
• Independent mute function

This board runs on 9v.

All functions are programmable via the I2C bus.

Version 1.5

Improvements :

• Red pcb - for a more professional look
• Fixed silk screen
• fixed header spacing - now breadboard friendly.
• Smaller footprint