This is the story of one particulate Vifa speaker that means a lot for me. It marked the beginning of my journey to the wonderful world of acoustics. I decided to write this article as a...

Finally. After almost 5 years I managed to find enough time and write this article. It was quite a journey for me personally and I enjoyed every minute of it. Having HPM-100 on my test bench was a...

Another DIY project that I finished recently. This was a really, really long time coming. It took me more time to finish it then I anticipated originally, but after all said and done – I’m pleased...

Although there is still bunch of content to publish in other category’s I decided to make a new one! (I know , I know…) So here it is – DIY.  Why? Because for a lot of what I know and can do today...

And winter is here! Time to crank up those sweet vacuum tubes for heating and get back to audio projects. There was a couple new additions to lab equipment over the summer that deserve at least...

This is a second article of the series, and here I will make a small overview of the design and engineering decisions, made by senior NAD engeneer Bjorn Erik Edvardsen, when designing this...

In this article, I will walk you through another restoration of an classical stereo amplifier. Some small fixes took place as well as upgrade to a new volume resistor attenuator and full blown...

This is a second article about this beautiful Japanese piece of engineering. It has a short model history and brief technical overview of used circuitry and components. Also you’ll find a...

Project includes fault finding and a repair process for a couple of in between unrelated malfunctions, which should be common in those units. Full write-up of restoration process, including recap...

Having this turntable for some time now, I didn’t made any in depth measurements because… well, it sounded good and that’s it. Now that it’s for sale, I decided to make a sample case out of it....