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Welcome to BuildAudioAmps

Welcome to our website. We are glad you are here. If this is your first time visiting us, thank you! We suggest you check out Project 65 in the “Recently added” section on the right side of the homepage.

You can also explore other projects by going to the “PROJECTS” menu bar on top of this page for a quick overview of each project, or perhaps the “More Projects” section found at the bottom of this page, if your time allows. There are over 90 pages of published projects on the website with detailed instructions and test results.

Another option is to visit the BuildAudioAmps YouTube channel, we just started posting presentation videos on that channel.  It's where you will also find more audio power amplifier projects, videos, and tips. And please don't forget to subscribe; you'll receive a notification when we upload new videos.

We are grateful to receive feedback and insights from the members who showed interest in a published project and completed their own versions of the project. We acknowledge the time and effort they have invested in providing valuable suggestions and constructive criticism.

And now more projects...

The previous series of audio power amplifier projects that I was working on used the LME498xx series of high-voltage input stage drivers. I have posted several of them, starting with Proj8, Proj11~25, and finally Proj39~42, but there’s really more than that and they have not been posted on the website as shown in the Tinkerer’s Workshop. It all started with Proj8, when I had the PCB fabricated professionally  to verify its layout quality. As a result of the first build, the audio quality it reproduced and represented was very impressive!

At present, I’m working on a new series of audio power amplifier projects that use an op amp at the front-end input stage of the amplifier. Currently, there are 16 amplifiers so far that have been built and tested, starting with Proj62.

Here’s a look at some of the completed projects:

This one is rated at 100 watts using Linear Technology LTC6090, which’s driving a pair of ThermalTrak transistors.

The next one is another 100-watt amplifier using an Analog Device ADA4700-1 connected to a complementary pair of Darlington transistors from Sanken.

This one is a 100-watt amplifier using Linear Technology LT1166, which controls the bias and effectively eliminates the matching of the QFET MOSFETs.