• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Tubes / Valves

All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum
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simple question - 5V heater power supply
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6
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hpupo
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rvrazvan
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Please vote for one of the schematics.
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10
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rvrazvan
rvrazvan
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Armstrong A10 MK2 EL34 mono block
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0
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3K
esll
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J
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problems with preamp on home brew
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2
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jeeptechfred
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wrenchone
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"Ug" The Transformer
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4
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Wavebourn
Wavebourn
J
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Jolida JD9 Problem
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4
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jkasch
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Wavebourn
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New concept of a power amp
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26
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smoking-amp
smoking-amp
john dozier
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Advantages of separate PS for input and output stages
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9
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Andy5112405
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A
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FI AUDİO 421 A
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0
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ayhan
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JoeDJ
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6N11 = 6N1P ?
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7
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9K
Wavebourn
Wavebourn
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Help. Replacement OPT sqrueeechhh.
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2
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mfaughn
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H
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Best DHT heater?
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10
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4K
Gluca
Gluca
roline
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Another PCB tube amp design
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3
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2K
kevinkr
kevinkr
B
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Tube Amp DIY or Retail
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12
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3K
roline
roline
A
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Power tube at work picture
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12
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4K
roline
roline
astouffer
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Resurrecting weak tubes
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10
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4K
quikie22
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R
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Newbie question about output transformer to speaker matching
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5
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1K
rss388
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rvrazvan
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2 Chassis amp
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14
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3K
indianajo
indianajo
rsumperl
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Red board add-on phono/RIAA pre-amp
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5
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3K
rsumperl
rsumperl
S
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El34 PP advice needed
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23
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slav
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