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Audio Output Triodes – Vintage Tube Services
http://vintagetubeservices.com/audio-power-triodes/
Audio Output Triodes Stock List. NOTICE: The tube prices in this catalog CANNOT be compared to others!! Each tube sold by VTS has been LABORIOUSLY auditioned, scrutinized, matched and pin polished by Andy Bowman in the V.T.S. Analog Laboratory using National Institute of Standards registered gear.
DHTRob - Preamplifier design using power triodes
https://dhtrob.com/zelfbouw/preamplifier_design_using_powertriodes.php
Also the power triodes' bigger internal structure is susceptible to vibrations and transformer stray fields, resulting in being microphonic and causing hum when not used in the last audio stage. Also these are running on higher current thus the inner structure has to dissipate more heat which causes the metal parts to expand.
Triode power amplifier. - Angelfire
https://www.angelfire.com/electronic/funwithtubes/Triode_Power_Amplifier.html
Power triodes may or may not have sounded better. We really have no way of knowing because there are no power triodes to use in an amplifier. That is, unless you want to go up to a pair of 811As with 1200 volts on the plates or …
POWER TUBES - oestex.com
http://www.oestex.com/tubes/triode.htm
However triodes suitable for audio power operation are becoming extremely scarce in the world market and aftermarket prices for popular types have increased astronomically in recent years. So it is often more convenient to use tetrodes, pentodes or beam power tubes because of availability, cost or convenience. An often overlooked design feature ...
A 211 SE Triode Amp | audioXpress
https://audioxpress.com/article/A-211-SE-Triode-Amp
While surfing the Internet and reading various periodicals, I noticed “big power triodes,” namely, the 211/845 family. Even though Svetlana has a current line of power triodes (572 and 811 series), I was curious about the older American triodes. Supposedly, for the ultimate SE DHT sound, these were the tubes to use.
What’s the Best 300B Tube for Your Amp? (Reviews-2022 ...
https://sonoboom.com/best-300b-tube/
During the 1930s, the GEC power triodes were known to be the finest audio triodes in Europe. The tradition continues, and Genalex still provides superior quality tubes. A high-quality triode, it is an upgrade in any 300B amp. They sound amazing and are available at a favorable cost. It isn’t easy to get a high-quality audio power triode at ...
A Low-Mu Triode Preamp | audioXpress
https://audioxpress.com/article/A-Low-Mu-Triode-Preamp
A Low-Mu Triode Preamp. In this article, originally published in audioXpress, February 2004, the author describes how to achieve low distortion from power triodes. As he explains, his preamp is “a little different from most, using low-mu power triodes to get good performance with only one amplifier stage, and no negative feedback.
KR Audio | highend-electronics, inc.
https://highend-electronics.com/collections/kr-audio
KR Audio. located in the heart of Europe, in Prague, the Czech Republic, KR Audio is the world leader in the production of low-frequency power triodes and hi-end audio equipment. Dr. Ricardo Kron and his wife Dr. Eunice Kron founded KR Audio Electronics in 1992.
Low mu Preamp Triodes as Power Output Tubes | diyAudio
https://www.diyaudio.com/community/threads/low-mu-preamp-triodes-as-power-output-tubes.130377/
Because their plate dissipation is nowhere near the big power triodes. even the chunky preamp tubes at ~5-7W will barely give you a watt of power. A 300B, in contrast, is rated at 40W, while even a "small" 2A3 is 15W.
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