Search Results for: mic preamp

LM4809 105mW Stereo Headphone Amplifier

Stereo headphone amplifier LM4809

This is the stereo headphone amplifier circuit diagram, built based LM4809. This circuit can be used for stereo headphone amplifier circuit for home audio system, microphone preamplifier, personal computers and PDA headphone amplifier and more. The LM4809 is known as a stereo audio power amplifier capable of delivering 105mW per channel of continuous average power… Read More »

A/B Box Switch 2 Inputs 1 Output with Dual Op-Amps

A/B Box Switch Pedal Circuit

This is a A/B Box switch pedal schematic with two inputs and one output and featured with dual operational amplifier modules. This circuit was designed by Rick Barker. This A/B Box effect was originally designed for switching between different harmonica mics. This A/B Box featured low noise dual preamp for better performance.