4-Channel Echo Mixer Circuit – PT2399 Based

Take your audio projects to the next level with this advanced 4-Channel Echo Mixer Circuit featuring the PT2399 IC. Designed for clear sound performance and versatility, this circuit combines four input channels with built-in delay, echo, reverb, and repeat control options – giving you full creative control over your sound.

Ideal for karaoke systems, DIY audio amplifiers, PA systems, and custom audio setups, this module delivers rich and adjustable sound effects. The PT2399 IC ensures smooth and natural echo and delay, while onboard controls let you fine-tune each effect to your liking.

Compact, easy to integrate, and perfect for electronics hobbyists or professional audio builders – this mixer adds life and depth to any audio output.

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