R&D Stories: QSC’s FAST Platform

November 2013 was the first issue of the redesigned audioXpress in its current form, featuring several new sections, including the first of its R&D Stories series, focusing on engineering and product development - independently of the audio application field. This article by Stuart Yaniger on QSC’s Flexible Amplifier Summing Technology (FAST) was a reference for many to follow.

Stuart Yaniger wrote a great article for audioXpress in February 2009, The ImPasse Preamplifier, describing a tube preamp to drive a pair of Nelson Pass’ First Watt F4’s (or other low-to-unity-gain power amplifiers) in balanced mono. Yaniger’s preamp is truly an elegant design with very, very low distortion, using a 6SN7 to drive a 6922 in balanced mode. There are LED’s, NE2H neon lamps and depletion MOSFETs in the design.

June 2015 is – we have to say it – undoubtedly one of the most diverse and interesting issues we have put together. The magazine has something for everyone and lots of great content we are certain will be greatly appreciated by our community. Discover the “outside-the-box” thinking that resulted in one of the most interesting loudspeaker designs in recent times and much more.

Compiled and published by Jan Didden, Linear Audio Volume 8, the eight issue of a series of printed bookzines dedicated to technical audio and perception is now available. The new edition includes a guest editorial by John Atkinson, Stereophile’s Editor-in-Chief, and contributions by Giovanni Stochino, Stuart Yaniger, Frank Blöhbaum, Rudolf Moers, Marcel van de Gevel, Barrie Gilbert, Ian Hegglun, Stan Curtis, Morgan Jones, Hans Polak, and more.