• 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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All octal 6AS7 PP amp – is it possible?
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fdegrove
fdegrove
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Bias secrets for a HH Scott 233?!?
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2
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SY
SY
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Cathode-coupled Phase Splitter Formula
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5
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MelB
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Stabist
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New MC preamp is comming alive
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32
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Stabist
Stabist
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Output current of this CAT SL-1 schematic ?
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eborgard
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Big pentode help!
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massimo
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which one?
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10
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planet10
planet10
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211 tube
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8
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2a3maniac
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Chinese new 845
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27
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Alkis
Alkis
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system matching
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990
rv1890
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Can anything be done
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sweet
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Fixed Bias Circuit for 300B
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9
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LeoJar
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coupling capacitor intermediate values
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3
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adam12
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Anybody know this TUBE?
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15
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fcr audio
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Bridging Mono Blocks
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8
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Eli Duttman
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Tube Failure
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11
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Enzo
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serengetiplains
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SV572-30: Opinions?
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serengetiplains
serengetiplains
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Heater supply problem?
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2
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1K
Sheldon
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Sch3mat1c
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Time to rock your world.
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31
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8K
audiousername
audiousername
Larry Lomax
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To be or not to be, UL or quad?
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6
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richwalters
richwalters
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