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GU81 Mono Blocks 250 Watts of Triode Power - Icon Audio
https://iconaudio.com/gu81-mono-blocks-250-watts-of-triode-power-mb81-pp
Our pursuit for making better amplifiers often leads us to places that no one has been before! Here is such an example. The magnificent 1950’s Russian GU81 transmitting valve has superb audio qualities and is tremendously robust. We were so inspired by our prototype design we decided to have a limited edition production in response to ...
Mono & Stereo © 2021: P Audio GU81-M tube amplifier
https://www.monoandstereo.com/2019/07/p-audio-gu81-m-tube-amplifier.html
Sneak peek at the AP Audio upcoming GU81-M tube mono-block power amplifiers...
GU81m Amplifier
http://alexkurrasch.com/amp/amp.html
GU-81m Amplifier. I was amazed when I first saw the GU-81m pentode. This relic of the cold war is about the size of a standard Nalgene bottle, and is rated for 450 watts continuous power dissipation. Yes please, I'll take two ;) Above is a picture of the class A amplifier I built around those two tubes in 2005 (which of course doesn't use the ...
Single Ended GU81 Mono Blocks with 100 Watts ... - Icon Audio
https://iconaudio.com/single-ended-gu81-mono-blocks-with-100-watts-of-pure-triode-mb81-se
The sonic qualities of the magnificent GU81 valve make it the ideal candidate for those seeking a high power Single Ended Triode amplifier. Its 100 watts of power make it ideal for low to medium efficiency speakers in medium to very large rooms and will give outstanding results. This venerable 1950s GU81 transmitting valve has superb audio ...
MB 81 SET - GU81
https://highend-sound.com/produkter/icon-audio/effektforstaerker/mb-81-set-gu81/
MB 81 SET - GU81. MB 81 SET - The Ultimate SET Amplifier! a high power Single Ended Triode amplifier. Its 100 watts of power make it ideal for low to medium. efficiency speakers in medium to very large rooms and will give outstanding results. This venerable 1950s GU81 transmitting valve has superb audio qualities and is tremendously robust.
GU-81M Linear Power amplifier - Ham-amplifiers
https://ham-amplifiers.com/en/power-amplifier-gu-81m
The shortwave power amplifier is made according to the classical scheme by a common cathode on a GUU-81M rectogonal lamp. This is an "old", reliable, time-tested lamp with graphite anodes and does not require forced cooling. With anode supply voltage + 3kV, stabilized supply voltage of the second grid + 750V and a resting current of 100mA, the amplifier develops an output power …
GU81 SE | dream of all Audiophiles | TG
http://tubeguru.eu/poweramps/index.html
GU81 SE. We had built the most powerfull single ended amplifier with ONE only ONE powertube, which is alone on the market, and NO other builder makes the same! If you know other same 65 watts SingleEnded amplifier, PLEASE share with me. The GU 81 SE's building job took a lot of time, it need 2x8=16 different designed/calibrated transfomers (OPT ...
GU81M / GU-81M / GU81 / GU-81 / GU80 / GU-80
https://www.zeitmann-tubes.com/MilitarySurplus/NosRussianMilitaryTubes/GU81M.htm
Cathode: directly heated, carbonized thoriated tungsten. Envelope: glass, with base. Height: at most 240 mm. Diameter: at most 105 mm. Mass: at most 1 kg. It can be used in self generated power oscillators, drivers and linear power amplifiers, too. It is a ruggedised military transmitting pentode up to 600 W output power,
GU-81m tube amp schematics??? | Page 8 | diyAudio
https://www.diyaudio.com/community/threads/gu-81m-tube-amp-schematics.183163/page-8
Schematic of my 1500W GU81 power amp Hi Folks, here are the drawing of my 1500W amp with 2x GU81 in the final. The Power supply is not shown. It need several heater voltages due to Vf/k . Input/Voltage amp 1000V+ (E80F / 2x EL803= Driver 600V+ (EL34)-Vg1 280V-Vg2 600V+ (from HT power unit) Output plate 2700V+ (2x GU81)
Icon Audio MB81 SE Mono Block Valve Power Amplifier …
https://www.analogueseduction.net/power-amplifiers3/icon-audio-mb81-se-mono-block-valve-power-amplifier-pair.html
High dissipation of the output valve is essential for any SE amplifier, in Pure Class A the efficiency is low and the power not used by the speaker is dissipated by the anode which gets very hot limiting performance for audio valves in Class A. GU81 dissipates 350 watts glowing cherry red at only half of its maximum capability giving it an easy ...
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