Electronic projects

High-quality modular design. 9V Battery powered - Very low current drawing. Preamp, tone control, mixer - all in one

author: RED Free Circuit Designs
visits: 8001

Stereo amplifier with 30w per channel

author:
visits: 7832

Digital volume control for your audio device with only few components.

author:
visits: 7795

Stereo Preamplifier with Bass-boost project

author: RED Free Circuit Designs
visits: 7027

Low distortion bass and treble control for amplifier

author: Tasos Anagnwstou
visits: 6924

Small digital volume control device. Modernize your amplifier.

author:
visits: 6341

This 3 channel 15 LED spectrum analyzer is the perfect addition to any audio amp project. It produces fantastic displays on three LED bars that can be individually adjusted for any particular frequency range.

author:
visits: 6251

This is a very simple, low cost, Hi-Fi quality power amplifier. You can build it 5 ways, like it’s shown in the table (from 20 W to 80 W RMS).

author: Jacint Chapo
visits: 6098

Useful to listen in faint sounds. 1.5V Battery operation. Amplifies only faint and weak sounds!

author: RED Free Circuit Designs
visits: 5691

10W Old-Style ultra-compact Combo. Two inputs - Overdrive - Treble-enhancement.

author: RED Free Circuit Designs
visits: 5467