This mic preamp uses the low noise IC uA739. The circuit is an example of how a good preamplifier can be designed for dynamic microphones. The IC houses two identical integrated preamp circuits. The ...

This mic amplifier is very performant and has a very low noise level. The amplification can be 20dB or 23.5dB (10x or 15x ) selected by S1. The output impedance is 70 Ω at 23.5 dB gain and with R3 = ...

ok, so im just fooling around with audio circuit related stuff trying to learn new stuff, and I have some questions.I am making a Bandpass filter with peak frequency of 12.5khz, and bandwidth of ...

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