You can DIY! The F5 Power Amplifier

In 2008, Nelson Pass submitted an article on its new F5 power amplifier design to audioXpress. At the time, he wrote: “I feel that it’s important to support AudioXpress, a magazine with which I have a 35 year history, and which also serves as a mainstay for the DIY community. Lately they have kindly printed projects that I had already posted on the web, but I decided that they deserve a little better than that.” Effectively, the F5 project was published in May 2008 and had a huge impact on the global DIY community and certainly contributed for the fact that audioXpress is still around today.

Erno Borbely shares with us his all-FET audio amplifier design. Following the original introductory "JFETs The New Frontier" Part 1 and 2 articles published in Audio Electronics - which we also include in this online post - the follow-up article focuses on DC-coupled amps. This article was published in audioXpress, May 2002.

MXL Microphones is marking its 20th year with special edition gold and pearl white versions of three of their most popular microphones: the Genesis SE Tube, R144 SE Ribbon, and 2001 SE Condenser. The special edition microphones retain all the characteristics of the original mics of the same names.