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Selecting resistors for preamp, amplifier and other high-end audio applications

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Guru of Grounding
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re: Selecting resistors for preamp, amplifier and other high-end audio applications
Guru of Grounding   8/26/2010 6:12:18 PM
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Many audio circuit designers seem to ignore the fact that, with regard to noise, all resistors are the same EXCEPT when DC flows through them - which, of course, causes the "excess noise". Most applications of resistors in audio circuits see no DC, yet many audiophiles believe that an expensive resistor will result in lower noise. Of course, low excess noise resistors are useful in applications where there DC does flow - the plate load resistors in vacuum-tube circuits, for example. This article seems to underplay that fact.

Robotics Developer
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re: Selecting resistors for preamp, amplifier and other high-end audio applications
Robotics Developer   8/25/2010 8:01:06 PM
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Thank you for an informative article! It was nice to have a refresher on the source(s) of noise and brings back memories of my earlier audiophile days.

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