Build a Hybrid Tube/MOSFET SE Amp

With a little know-how and some basic parts, you can design a hybrid amplifier in fairly short order. This project combines the best attributes of both tube and transistor technologies.

Which sounds better — a tube or solid-state amp? The "Great Debate" has been going on for decades. Now it's time to put the debate to rest. In audioXpress, November 2012, Richard Honeycutt's published this article exploring how to detect audio amplifiers’s differences in sound and the need for a correct subjective evaluation process of components and systems.

Looking to start a DIY tube amp project without shelling out big bucks? You can do it if you follow a few tips from Bruce Brown, who built a high-quality tube amp for less than $150. His biggest purchase was the “iron.” Here’s how he kept the cost down.

This month’s audioXpress brings a great article from our regular contributor Thomas Perazella, in which he revisits the art of studio reamping and the different approaches and implications of that two-stage studio process. During the process, we first record a …

Member Name: Shannon Parks Location: Mahomet, IL An audio engineer at his own company, Parks Audio, Shannon Parks is proud to have almost all the Audio Amateur magazines in his library and he has been reading audioXpress for quite sometime. Shannon owns Parks Audio and is the administrator of the DIYtube forums (www.diytube.com).

Through an engineering collaboration with NXP, vehicles without Bose speakers and amplifiers can now use Bose Active Sound Management technology to cancel unwanted engine and powertrain noise in a car’s cabin. The Bose software solution will operate in any vehicle …

Shannon Becker interviews Ken Heng Gin Loo, the founder of the diy-audio-guide.com website. Ken is of Malaysian Chinese origins, and studied in the United Kingdom, where he graduated in Electrical and Electronics Engineering (Honors) from the University of Manchester, UK. Today he lives in a beautiful tropical island named Pulau Pinang (aka Penang) in Malaysia. Ken has a passion for DIY audio, in particular tube amplifiers, Tripath amplifiers, high-efficiency loudspeakers, and high-quality audio reproduction. This article was originally published in audioXpress, December 2013.

Member Name: Bruce Heran Location: Sierra Vista, AZ Education: Bruce has a BS in Biology and he has taken some master’s levels courses. Member Status: He has been reading audioXpress for a number of years. Occupation: Bruce co-owns and is …

Gregory Charvat—an engineer, professor, entrepreneur, and author—encourages people to explore the opportunities that come their way. SHANNON BECKER: Your interest in amateur radio equipment began when you were young and continued through your high school years. Can you describe some …

The simple one-story building, home to the Vintage Radio and Communications Museum of Connecticut, provides few clues to the immense, historical collection contained within its brick and mortar walls. The virtual time capsule is filled floor to ceiling with more …