This review is from: Designing Tube Preamps for Guitar and Bass (Hardcover)
This book is pure gold.
Just the right amount of detail and an engaging writing style make this an excellent source for the skilled amateur amp builder. Some prior knowledge is necessary as would be expected at this level.
The only down side is the printing: some of the diagrams have optional components in faint print, this is sometimes invisible in my copy.
Well done Merlin, more in this series please.