Schiit Audio Introduces Aegir 2 Speaker Power Amp

Schiit Audio introduced the second generation of its Aegir speaker power amp, Aegir 2, bringing its mixed voltage and current feedback Halo topology to a speaker amp for the first time. Schiit found that this topology provides significant enhancements to the original Aegir’s performance, now combined with the company's Continuity output stage which enables higher power output, less heat, and lower noise floor.

Recently, the very existence of current feedback as opposed to voltage feedback has been called into question. This article analyzes and tests simple versions of voltage and current feedback amplifiers and demonstrates some differences in their characteristics. The article provides an excellent overview of historical terminology and how the more modern terms came about and their dependence on context. These articles were originally published in audioXpress, July and August 2018.

Michael Kiwanuka’s article “Current Feedback and Voltage Feedback Fallacies” (audioXpress June 2017) elicited comments from Walt Jung, with supporting signatures from a number of well-known designers, to which Kiwanuka responded. Since some editing errors have crept into the article, we decided to make available a complete correct version of the article, together with the mentioned comments and exchange.