POWER SUPPLY Now we at the stage where we have to power our silent transformer coupled gain stage. The power supply should not disturb the ground plane that the gain stage is using for its reference. Passive filtration as used in 99% of tube amplifier provides great results mainly due to the low currents involved in tube electronics. Chokes are the absolute greatest tool for power supply filtration and they are very effective at stopping EMI/RFI. Regulated power supplies with

GAIN Finally, we reached the gain stage. The decision was to use the most linear device with zero feedback for this task, a vacuum tube, more precisely a triode vacuum tube. Contrary to general perception tubes are the most linear voltage amplifying devices, more than an order of magnitude better than transistors. They also have a very linear relationship of distortion and amplitude. Their harmonious distortion spectra makes them the most suitable for audio signal amplificati

As you know, a line level pre-amplifier is the center of operations for your audio system. It is used for source selection, volume control, and to optimally drive the power amplifiers. In the previous post I covered the selection of the input technology and its properties, the second function of the line level pre-amplifier is to adjust the level of the signal being sent to the power amplifiers. Considering that each one of the sources can have a different nominal level signa

As the 20 year anniversary since the start of this project approaches I am going to do a series of posts exhaling the reasoning behind the development of each of the Thrax Audio products, the technology used, the challenges and the end result with its strengths and weaknesses. It all started in 2006 with the idea of building a reference remote controlled vacuum tube pre-amplifier with modern features not available at the time from any commercial product. The project was cost

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High End By Oz, our distributor for North America, presented at T.H.E. Show 2022 with some of the finest Thrax products - read about the...

Roon is an incredibly rich and engaging way to browse and organize your music. It runs on most Mac, Windows, and Linux PCs, or on other...