Category Archives: Technical articles

Winged C factory will not be producing any more glass tubes!

There has been a rumor floating around for a few months that the Winged C (SED) tube factory has closed down.  I’ve been staying in touch with the importer since then and they’ve been telling me that the factory was … Continue reading

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How to get the best tone from your tube amp.

Do you ever wish your amp sounded better?  Are you looking for ways to improve your tone?  All guitarists want great tone yet many players are not getting the best tone their amp has to offer.  There are a lot of factors affecting … Continue reading

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12AT7 tube shootout for guitar amp phase inverters

Very little attention has been paid to the important role that a certain tube plays in most guitar amps.  I’m talking about the phase inverter or PI tube.  The PI is the tube that creates the push-pull waveform and it’s the … Continue reading

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When should I replace my tubes? How long do they last? What happens when they go bad?

There are three basic types of tubes used in guitar amps, rectifier tubes, preamp tubes, and output tubes.  Rectifier tubes are used in the power supply.  Their function is to turn AC (alternating current) into DC (direct current).  The DC is … Continue reading

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Gain, Headroom, Volume and Power

Gain, Headroom, Volume and Power Let’s start with GAIN. There are several ways to measure gain but in guitar amplifiers, when gain is discussed, we usually mean voltage gain. In this case, gain is the ratio of input voltage to … Continue reading

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Comparing different types of effects loops

I’ve come to realize that there is a lot of confusion and misinformation floating around regarding effects loops.  First, what is an effects loop?  Generally speaking, an effects loop (aka FX loop) is a set of connections on an amp … Continue reading

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