Author Archives: jeff

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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Reviews and interview on the Andrews A-22 and Para-Dyne 20 in ToneQuest Reports Magazine

Check out the article in the June 2012 issue of ToneQuest Report Magazine.

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The new Andrews Para-Dyne Amps are Here!!

After many months of development, the new amps are here in the shop. Please come by and try them out. For all the latest details, sound clips and videos, check out the new web site at http://www.andrewsamps.com

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Warehouse Guitar Speakers

I’d like to let everyone know about some new favorite speakers from WGS. For those who don’t know about WGS, they are located in Paducah, KY and all the speakers are built at their facility here in the USA. They have … 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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Watch for upcoming website changes!

Welcome to my new news/blog page.   Stay tuned and watch it grow.  My intent is to integrate the whole website into this more modern format which will include blogging and much more!  

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