ALL FET MC Phono Preamp: Phono preamp with54 and 64 dB gain and RIAA accuracy is better than0.2dB, from Borbely Audio |
Balanced Low Noise Microphone Preamp: very low noise, close to the theoretical minimum, high hum rejection and variable gain with a single rotary pot, similar to that used in many professional grade mixing desks |
Computer Microphone: adapting electret microphone to soundcards with dynamic microphone inputs |
Digital Quality Microphone Pre Ampl. Using the Model 425 OPAMP : |
High Performance Audio Applications of the LM833: RIAA Phono preamplifier stages and active crossover ne2-rks |
Low Noise Balanced Microphone Preamp: very low noise, close to the theoretical minimum, high hum rejection and variable gain with a single rotary pot, similar to that used in many professional grade mixing desks |
Microphone Preamp: Very simple two transistor circuit |
MW Preamplifier: The tuning voltage is variable from 1 to 12 volts and is designed to cover the medium waveband from about 550Khz to 1650Khz. |
Phono Preamp (valve): tube design |
Phono Preamps for All: a collection of Phono preamps and equalization circuits,1-of which is sure to meet your requirements |
Preamplifier for Microphone or guitar use: suitable for guitar or microphone use. |
SIMPLE AUDIO PREAMP: This easy to build circuit provides good gain to weak audio signals. Use it in the front end of a RF oscillator to make an RF transmitter that is very sensitive to sound. |
Taos Amp Solid State Mic Preamp: simple Transformerless microph1-preamp, includes circuit board design |
Audio Circuits: Preamplifiers
