• 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
JPS64
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12AU7/IRF610 Hybrid Amplifier
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2
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2K
JPS64
JPS64
rsumperl
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When can screen voltage be higher than plate???
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31
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9K
Tubelab_com
Tubelab_com
lduarte1973
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CLASS A TUBE AMPLIFIER FOR TWEETER
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22
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5K
digits
digits
JPS64
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RIAA preamplifier
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0
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2K
JPS64
JPS64
Q
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How to gap output transformers?
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2
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1K
quikie22
Q
vintage_dog
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converting EF86 to take 12AX7
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25
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10K
Flee
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R
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YS Audio balanced Preamp
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0
Views
1K
reinhard
R
A
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Music Angel Meng 6P1
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4
Views
3K
atnaat
A
andyjevans
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Is it worth using anything other than DHTs for preamps?
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198
Views
48K
triode_al
triode_al
mr2racer
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Scope Trace
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5
Views
1K
tomchr
tomchr
G
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phase splitter
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2
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2K
llwhtt
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F
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What to build? (I have a lot of parts)
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54
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6K
fingerboy21
F
D
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Is it possible to dampen a partially microphonic 12ax7?
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8
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2K
quikie22
Q
L
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PAS Upgrade Boards by Epperson
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3
Views
1K
SY
SY
S
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Choosing plate voltage
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9
Views
2K
Merlinb
Merlinb
H
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Problem with my amp, and I have run out of ideas
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85
Views
11K
richwalters
richwalters
R
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What is grid resistance of 807/6l6 in pentode
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9
Views
3K
DF96
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T
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Finished EL34 tube amp... but oscilates weird..
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9
Views
2K
Miles Prower
Miles Prower
C
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DIY pre-amp kit vote
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30
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39K
rmyauck
R
U
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Decca DMI-73 and EL-84 weirdness
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9
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5K
childsguitar
C
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