In the drawing he appear simple but powerful power amplifier. His difference with the classic designings, that use differential amplifier in their input, they are that this amplifier it uses a completed the NE5534, in his input. Thus it should we degrade the high voltage of power supply, in ±15V, that needs the IC1. This [...]
A high quality microphone preamplifier using a single power supply, suitable for dynamic or electret microphones. The opamp used can be any low noise, high performance type, e.g. NE5534,TL071, OPA 371 etc
Nothing too special here. The design is a standard non-inverting design, the input is applied to the non-inverting input of the op-amp which is [...]
Back in the 1970’s I became disheartened by audio ‘progress’, for in spite of them presenting much superior specifications, mainstream transistor amplifiers sounded worse than the tube (valve) designs they were supposed to replace. Ultralinear KT88s made good power amplifiers, but transistor circuitry could be much better for pre-amplifiers. Integrated circuits had also developed well, [...]
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