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Audio preamplifier circuit diagrams
August 7, 2010
This is a symmetrical amplification unit circuit, more composed, modified by a construction which was proposed some years ago by Lisley Hood. The most important reason is to get the right transistor FET at differential... [more]
August 7, 2010
A very simple but very good amplifier unit, with low distortion. A similar modification was used as a preamplifier HAFLER. The quality however of the reproduced sound in all the symmetrical amplifiers regardless of the... [more]
August 7, 2010
The amplifier's gain is nominally 20 dB. Its frequency response is determined primarily by the value of just a few components-primarily C1 and R1. The values of the schematic diagram provide a response of ±3.0... [more]
circuit from:http://www.extremecircuits.net/2009/07/audio-booster.html
August 7, 2010
Bass Boost is today's sound... whether it's the driving, gut-vibration pulsation of disco, or the solid bass line of soft, hard, or laid-back rock. One way to get the modern bass-boost sound without running out... [more]
circuit from:http://www.extremecircuits.net/2009/08/bass-booster-circuit.html
August 7, 2010
MP3 players are all the rage these days. The smaller ones in memory-stick format are particularly easy to take with you; your very own ‘personal sound system’ on the move! It’s when you want others... [more]
circuit from:http://www.extremecircuits.net/2010/04/pump-it-up-mp3-booster.html
July 2, 2010
This preamplifier was designed to cope with CD players, tuners, tape recorders etc., providing a gain of 4, in order to drive less sensitive power amplifiers. As modern Hi-Fi home equipment is frequently fitted with... [more]
June 22, 2010
Stethoscopes are not only useful for doctors, but home mechanics, exterminators, spying and any number of other uses. Standard stethoscopes provide no amplification which limits their use. This circuit uses op-amps to greatly amplify a... [more]
April 25, 2010
Three Tube PHONO (RIAA) Preamplifiers with ECC83 [more]
April 25, 2010
A very good circuit of pre-preamplifier, for amplification of signals from heads of Moving Coil. It uses the two departments of tube ECC88, association parallel, for reduction of produced noise. [more]
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