Williamson Amplifier 1947 Further Reference: Link to: Original Article (Wireless World: April 1947) The Williamson Amplifier Revisited. by B.v.d. Kerk. ELEKTOR magazine 9/97 (Audio Supplement) Click to enlarge The Williamson Amplifier by Peter Lankshear. Electronics Australia Mag' July 1990, pg 150 Click to enlarge