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Down the Rabbit Hole - Adventures in the Land of Phonostages

Author(s): Gerhard Joachim

Vol 0 Down the Rabbit Hole - Adventures in the Land of Phonostages Joachim Gerhard When prolific designer Joachim Gerhard puts his teeth into something, he will get...

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Some Feedback about Electrolytic Capacitors

Large-value electrolytic capacitors are an easy solution to keep DC offset out of low-impedance sources like MM cartridges. Yet, many audio designers (and customers...

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On the Noise performance of Low Noise Input Stages

Author(s): Popa Ovidiu

Low noise input stages are widely used in audio equipment, in particular for Moving Magnet (MM) and Moving Coil (MC) cartridges. An existing quality MM preamplifier...

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Correcting Transducer Response with an Inverse Resonance Filter

Author(s): Raalte Steven van

Steven van Raalte set out to combat the resonance in phono cartridges. Manufacturers often rely on this resonance to compensate for the hf roll off caused by...

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VinylTrak – A full-featured MM/MC phono preamp

Author(s): Cordell Bob

After spending many years to write an encyclopedic tome on audio power amplifier design, Bob Cordell decided to turn his considerable talent to the design of a phono...

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A Tube based Phono Preamplifier

Author(s): Gevel Marcel van de

Since noise is always a very important factor in phono preamp designs, Marcel gives it much attention. He compares several tubes in this regards, giving methods for...

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An Archival Phono Preamplifier

Author(s): Galo Gary

An Archival Phono Preamplifier is a phono preamplifier designed for playback of vintage recordings long-playing, 45- and 78-rpm records made before the RIAA...

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RIAA revisited, or how to better judge documented figures

Author(s): Polak Hans

Hans Polak noticed that the noise specifications of RIAA preamps are often given in units and operation conditions that make it hard to easily judge the comparative...

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Proteus – a current input moving coil preamp

Although Erno Borbely must have designed a dozen or more phono preamps, he never tires of trying new avenues of circuit design to find that elusive holy grail. In...

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The High-Octane phono preamp

Author(s): Allmaier Hannes

Hannes Allmaier likes to design phono preamps because of the interesting mix of conflicting requirements of low noise, correction accuracy, headroom and dynamic range...

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