• 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
Jaytor
BAT VK5i with left channel hum
Replies
18
Views
695
rayma
rayma
B
Chronicling a Dynaco MK III resto-mod
Replies
71
Views
5K
baldrick
B
joedonchev
Tube preamp EQ bypass switch
Replies
8
Views
490
joedonchev
joedonchev
dwjames
Retrofitting film caps to replace all electrolytics in Sun SV-300B
Replies
2
Views
405
dwjames
dwjames
djn
Can the 3CX1500A7 tube be used in home stereo???
Replies
26
Views
2K
Tubelab_com
Tubelab_com
G
Uses for "filament bulb" style LED strings?
Replies
37
Views
3K
geezertron
G
W
novice rebuilding HK Citation II, at his wit's end
Replies
51
Views
2K
walterramjet
W
E
Beam power OTL - shifting bias levels
Replies
3
Views
622
ErikdeBest
E
kingfisher
Rectifier tubes
Replies
25
Views
2K
Kay Pirinha
Kay Pirinha
Fully Articulated
Current paths in tube amplifier circuits
Replies
19
Views
1K
trobbins
trobbins
jdg123
broken stud on Lundahl interstage transformer
Replies
11
Views
736
jdg123
jdg123
E
Where are the eddy currents located in a core? where is it safe to connect the lams?
Replies
9
Views
530
benchbaron
benchbaron
J
26A7GT headphone amp
Replies
2
Views
326
JordiMB
J
OldHector
Baby Huey ECL86/Dissident Audio
Replies
25
Views
4K
Kay Pirinha
Kay Pirinha
N
Single Ended Audio Output Transformer Rating?
Replies
6
Views
672
Hearinspace
H
M
I need help finding Noise in EL84 amp
Replies
13
Views
1K
MrPete831
M
D
Shiny Eyes 45 Regulator Issues - Rod Coleman V7
Replies
29
Views
2K
Dneu2011
D
E
Magnetic flux distribution in the core, depending on the Frequency?
Replies
9
Views
968
45
4
F
Poor man's 300B amplifier
Replies
88
Views
8K
6A3sUMMER
6
W
Vari-Mu compressors, Rectified voltage, Negative tube bias questions
Replies
21
Views
2K
Merlinb
Merlinb
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