In this issue: - THOR: A D'Appolito transmission line - Listening critique - The All-Fet line amp - A practical circlotron you can build - The Infinite Box: Constructing a Subwoofer, part 2 - A sensible McIntosh 225 refurbish - Moving-Coil phono cartridge transformers ...and plenty of other articles, reviews, and technical info on crafting a sound system with your own hands.