• 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
tonescout
How stable should DC anode voltages really be?
Replies
43
Views
3K
tonescout
tonescout
B
Is dynakitparts still shipping product
Replies
14
Views
646
jxdking
J
elac310
Output transformers from China: understanding the market
Replies
48
Views
2K
ceylon.mooney
C
K
Filament CCS for DHTs with automatic adjustment
Replies
46
Views
4K
KoitoYuu
K
artosalo
Simple AB2 PP-amplifier with OP-amp driver
Replies
35
Views
5K
matejsirk
M
Ciro82
Hybrid P3A - Tube differential input stage - ECC88
Replies
4
Views
876
Ciro82
Ciro82
K
Have you ever seen this done to a MkIII?
Replies
31
Views
2K
egellings
E
J
Gemtune APPJPA0901A updates
Replies
0
Views
76
Joetiii
J
W
Harmonics for PSE DHT Amplifiers
Replies
20
Views
674
jan.didden
jan.didden
E
Oscillation with cathode feedback
Replies
25
Views
2K
gabdx
G
M
Dynaco ST-35 question
Replies
24
Views
5K
jxdking
J
martyh
Finally building my VT-52 HPA
Replies
7
Views
706
L0rdGwyn
L0rdGwyn
O
Audiophile capacitors
Replies
19
Views
1K
old n in the way
O
K
New 6F5P SET Amp Build - Slight Hum
Replies
6
Views
264
grataku
G
G
Tube testing recommendations
Replies
24
Views
870
DrowningNotWaving
D
mbrennwa
Debugging Coleman Filament V9 regulator
Replies
11
Views
437
mbrennwa
mbrennwa
N
Need a good EL34-5U4G-6SL7GT schematic
Replies
53
Views
16K
hooman
hooman
D
6N2 bias resistor stock vs Lampizator
Replies
4
Views
268
jcalvarez
jcalvarez
B
6C33 PP amp complete
Replies
4
Views
325
baudouin0
B
Tubologic
Telefunken RV218 power triode
Replies
19
Views
6K
triode_al
triode_al
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