Audio Projects
Phantom Powered Microphone Preamplifier – Low Noise – Professional Quality
The project presented here is a professional quality Phantom powered Microphone pre-amplifier.
Voice Echo Processor Module – Delay Device for Sound Effects, Echo, Reverb
The voice echo or digital delay sound effects project presented here is suitable for applications such as Karaoke, multimedia, musical instrument effects, electronics toys, animatronics, etc.
Mono 2W – Switch-Mode (Class D) Audio Power Amplifier
This is a compact size, mono, switch-mode (Class-D) audio power amplifier intended for multimedia and general-purpose high-power applications.
4 x 45W Quad Bridge Audio Amplifier
This is an AB class audio amplifier based on the TDA7388 chip and it is a great choice for car audio applications.
Dual 105mW Headphone Amplifier with Digital Volume Control and Shutdown Mode
This is a low noise Headphone Amplifier capable of delivering 105mW per channel of continuous average power into a 16Ω load with 0.1% (THD+N) from a 5V power supply.
2.5W Stereo Audio Amplifier using LM4752
The Stereo Audio Amplifier project shown here is capable of delivering 2.5W per channel of continuous average output power to 4Ω loads using a single 12V supply at 10% THD+N.
Piezo Element Amplifier for Guitar and Violin
The board presented here is a preamplifier for contact microphones that are used for amplifying the sound of musical instruments which do not contain electrical pickups, such as guitar and violins.
Audio Line Receiver using INA134
The project described here is a differential line receiver consisting of high-performance INA134 OPAMPs with on-chip precision resistors.
Audio Line Driver using DRV135 with Balanced Output
The project presented here is a differential output amplifier that converts a single-ended audio signal input to a balanced output pair.
Dual 40W Audio Power Amplifier with Mute
The stereo audio amplifier project shown here is capable of delivering typically 40W per channel continuous average output power into an 8Ω load with less than 0.1% (THD+N).
Hi-End Microphone Preamplifier with Variable Compression, Noise Gating and Adjustable Gain
The circuit shown here is a complete microphone signal conditioning system based on a single SSM2166 integrated circuit.
49W BTL 4 Channel Audio Power Amplifier
This is a 49W – 4 Channel audio amplifier project that is built using TB2941HQ power Integrated Circuit which has a built-in four-channel BTL amplifier developed for car audio applications.