Report 1938-09Abstract This report describes the fundamental differences between triode and pentode valves, and indicates how the performance of the latter type can be improved by applying feed-back.

You can’t doubt the appeal of vintage audio equipment, especially stereo receivers. With their giant metal knobs, faux-wood paneling and glow-up facades, they have a unique cool factor that modern ...

Design The Omega Lupi uses four PCL86 tubes, which combine a triode and pentode in a single capsule. This dual-filament design enhances the amplifier’s ability to produce rich and dynamic sound. The ...

In the first of three parts, Andy hypothesizes that the K2-W Analog Computer Op Amp’s design has some unrevealed mad science in its input-stage design.

Just over 30 years ago, it was announced that the IEEE was awarding the 1973 Edison Medal to a non-American for the first time. This prized recognition for "a career of unusual distinction" was ...

by pentode Publication date 2023-06-04 Usage Attribution-NoDerivatives 4.0 International Topics automatic music, algorithmic composition, djezmusic, mp3, experimental, noise, lo-fi, pentode, ambient ...

The Triode 25 in Pentode mode, reminds me of some of the more recent Audio Research designs, but with less power on tap. It is wonderfully clean and transparent sounding with excellent detail and top ...

lxxii, 357 pages : 24 cm "Few conservatives are as revered and admired as William F. Buckley. Buckley is best known for founding National Review, the flagship journal of the right. But his ...

Valves 6H30P dual triodes x 6, plus 6550WE and 6H30P in power supply Dimensions (hwd) 20 x 48 x 42cm Audio Research Reference 80S power amplifier: Power output 70 watts per channel in pentode mode, 33 ...

There was a time when people like us might own a tube tester and even if you didn’t, you probably knew which drug store had a tube testing machine you could use for free. We aren’t sure… ...