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Genalex KT88 England
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Tung-Sol KT170 to be introduced
Exciting news. Tung-Sol is releasing a new tube – Tung-Sol KT170. The tubes are capable of power dissipation of 85 watts (vs 70 watts for it’s predecessor KT150) and can do 300 watts in push-pull mode. This will be a huge tube (137x68mm/5.5×2.6inch)! The availability and exact tech specs are TBD.
A brief history of 12ax7 tubes
The 12AX7 is arguably the most iconic and widely utilized audio vacuum tube in history. Its enduring popularity stems from its ubiquitous presence in high-fidelity (Hi-Fi) home audio and, most notably, guitar amplifiers. In the latter, these tubes are often pushed to their operational limits, leading to a faster replacement cycle compared to other applications..
Electro-Harmonix 6CA7 Russia
Tube Maze guys sent me a matched quad some time ago. The matching process that he uses produces a very tight set, which is very important if you have a fixed bias amp like I do. Closer the match, the happier the amp – simple as that.
National Union 6SL7 Black Glass
Edison Mazda Light Bulb – early 1900
A Historical Departure: The Edison Mazda Light Bulb (c. 1910–1920)
While this featured item deviates from our typical vacuum tube focus, its historical significance to the evolution of electronics makes it a noteworthy discovery. During a recent acquisition of vintage tubes, I uncovered a remarkable artifact: an original Edison Light Bulb dating back to the early 20th century.
Continue readingBrimar 6067/12au7 Black Plates
Soviet/Russian Tubes Equivalents
This is a list of Soviet and Russian tubes and their American/European Equivalents.
Continue readingTung-Sol 6F8G/VT-99 Black Glass
Rolling 6dj8/6922/7308/CCa
Great review of 6dj8/6922/7308/CCa tubes from Audiofool