DiyAudio Tube Constant Current Source Board

The Design of Electrostatic Loudspeakers - Frank Verwaal 2011

SANSUI TU-919 Owner's Manual

Multi-Function Frequency Meter - Elektor Jan 1988

Of Loadlines, Power Output and Distortion

When Negative Feedback Isn't Negative (the Cause and Prevention of Oscillation & Distortion)- Cathode Ray (Wireless World, May 1949)

Dynaco PAS-3X Stereo Preamplifier - Assembly, Operation & Schematic

Hi-Fi Stereo Handbook by William F. Boyce - third edition (1970)

Audio Transformer Design Manual - Robert G. Wolpert (2004)

An Approach to Audio Amplifier Design - J. R. Stuart (Wireless World, Aug-Oct 1973)

Transformer Design and Manufacturing Manual - Robert G. Wolpert (2004)

What is a Load-Line - More About Load-Lines - Norman H. Crowhurst (Radio-Electronics, Jun 1955, Apr 1956)

Triode vs. Pentode - Witch - Norman H. Crowhurst (1956)

Audio Handbook No.3 - The Use of Audio Frequency Transformers - Norman H. Crowhurst (1953) Clearscan

Winding Your Own Single Ended Output Transformer - Jim Flowers (Valve Magazine, Jan-Apr 1997)

Uses and Abuses of the VU Meter -Oliver Berliner (Audio, Nov 1955)

Transformer Distortion - Dunford Kelly (Audio Engineering, Feb-Mar 1959)

Transformers - Arnold Schwartz (Db, Nov 1973)

Selecting a Valve Audio Output Transformer

Audio Transformer Design - Norman H. Crowhurst (Audio Engineering, Feb 1953).pdf