Links

EI Factory Tour Part 1 (YouTube Video)

EI Factory Tour Part 2 (YouTube Video)

Amp-Books (Website)

The Valve Wizard (Website)

Duncan Amps & Tube Datasheet Locator (Website)

TubeBooks.org (Website)

Some nice (and very usefull) software tools

LTSpice - Analog Simulator (Website)

DIY-Layout Creator (Website)

KiCad (Website) - PCB Software

ARTA (Website)

LibreCAD (Website)

SPlan (Website)

Inkscape (Website)

Scribus (Website)

Support Open Source Software!