• 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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Heathkit W4-AM amp
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9
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968
grovergardner
G
T
HHScott.com site is dead
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5
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1K
carlman14
C
S
Sonic Frontiers Power 1 stereo amplifier schematic?
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0
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424
SMOTH
S
J
Radford STA-35 different versions
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13
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1K
6A3sUMMER
6
C
Lite Audio phono LS 37
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4
Views
707
Chris Hornbeck
Chris Hornbeck
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Diode selection / replacement for CJ MV55
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6
Views
573
audio king
audio king
Miniwatt
Tube 'test' interpretation
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1
Views
379
euro21
E
L
Replacing 6DJ8 with 6GM8
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5
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717
lordearl
L
B
Rectifier tube arcing?
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25
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1K
euro21
E
J
Triode strapped EL34/6L6s or 6V6s in SE build, 6SN7 up front
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7
Views
779
Bigun
Bigun
H
SVP and FVP preamp builders
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112
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11K
viltsone
V
J
Borbely 6C33C-B Amp Build
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4
Views
1K
jono1
J
D
Voltage across diode tube e.g. EZ80?
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19
Views
934
v4lve lover
V
M
Failing KT88- what to do?
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25
Views
2K
jean-paul
jean-paul
K
Hiwatt t40 problem bias e pointed Graetz
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7
Views
618
kaesar1975
K
S
Noob oscilloscope analysis needed
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18
Views
879
jan.didden
jan.didden
T
Hybrid RIAA tube preamp SS Poweramp General Arrangement
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10
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997
Koifarm
Koifarm
T
No more blue glow in Australia
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116
Views
6K
Kay Pirinha
Kay Pirinha
I
  • Locked
Help with hum in parafeed headphone amplifier
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2
Views
463
itsikhefez
I
J
Effects of low voltage to rectifier tube
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62
Views
3K
joneci
J
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