• 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
F
Line output transformer for 201A
Replies
7
Views
533
euro21
E
D
LUA HIFI 4545L
Replies
1
Views
241
Tjj226
T
AudioFanMan
Bad 12AU7?
Replies
13
Views
673
AudioFanMan
AudioFanMan
bremen nacht
Constant current for heaters?
Replies
26
Views
2K
Don Hills
D
W
Repurpose vertical output autoformer?
Replies
18
Views
4K
svanschalkwyk
S
planet10
New Valve tester
Replies
5
Views
699
gorgon53
G
M
Dave Davenport
Replies
0
Views
244
Milkduds
M
A
Western Electric 339A characteristics
Replies
4
Views
638
arcxenos
A
tonescout
voltages making no sense - help!
Replies
111
Views
7K
Capman1961
C
mbrennwa
Warnings, disclaimers and liability with high voltage projects
Replies
25
Views
2K
kodabmx
kodabmx
S
fixed bias problem / question
Replies
13
Views
506
schmendric
S
montana
Converting 6SL7 to 6SN7
Replies
10
Views
701
egellings
E
A
  • Locked
Repairing Hakko Soldering Iron
Replies
28
Views
2K
Stuey
Stuey
Mikie
Yaqin MC-5881A amplifier improvements
Replies
197
Views
118K
ronanm
R
D
Constant Clicking Sound Sangaku DIY
Replies
9
Views
644
Dr. Pepper & Mr. Hyde
D
S
Laminations for OT
Replies
34
Views
2K
egellings
E
E
Amplifier with continuous change between SE and PP operation
Replies
40
Views
3K
jjasniew
jjasniew
invaderzim
EJ Jurich PP Monoblock
Replies
44
Views
10K
edwardjurich
edwardjurich
petertub
EV21 tube?
Replies
3
Views
409
petertub
petertub
M
SET for Real Speakers - Principles
Replies
56
Views
3K
Fuling
Fuling
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