How to gain gain: A Reference Book on Triodes in Audio Pre-Amps

The Sound of Silence: Lowest-Noise RIAA Phono-Amps: Designer's Guide

The Sound of Silence: Lowest-Noise RIAA Phono-Amps: Designer's Guide, Edition 2

Balanced Phono-Amps: An Extension to the 'The Sound of Silence' Editions, Edition 2

Slopes and Levels: Spice Models to Simulate Vintage Op-Amp Noise