Click to enlargeDOWNLOAD "Amp Tips" Build a Tube Preamp!

Build a complete Tube Stereo Preamp

Based on a high gain Marshall circuit this article is reprinted (with updates and improvements) from Vintage Guitar Magazine - Dan Torres's "Amp Tips" Column.

This project contains a WHOLE LOT of advanced tube amp technology and just about everyone will learn some good stuff from it.

It features a tube voltage regulator in the power supply for amazing low noise, biased filaments and why - a couple of versions of the power amp driver circuitry including incredible sounding EF86 drive circuits (in stereo no less!)

All the schematics are included here and real good detail on design and building the unit. as a project box or in a rack mount cabinet.

The power supply alone is worth looking at. I have used this same power supply since this time in just about every preamp design and project and we keep the tubes etc. in stock all the time.

A great, fun project with tons to learn from.



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We can install any and all of our kits in our custom workshop - email for info.

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We have all the parts and tubes for ALL the mods. check it out 

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Torres Engineering
2500 Alder #226
Milton WA 98354-7001
 Email   amps006@gmail.com