• 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
R
Realistic inductance value in Output Transformer
Replies
61
Views
4K
jan.didden
jan.didden
Jaap
location amp vs speakers
Replies
4
Views
197
Jaap
Jaap
B
Best 300B SE OPT?
Replies
857
Views
220K
Grid01
G
W
Moscode 300 problem
Replies
6
Views
322
grataku
G
mark02131
6V6 - 300B Circuit idea
Replies
11
Views
643
tubesguy
T
dubadub
Driving 6B4G with half a 6SN7 - SET amp
Replies
43
Views
2K
dubadub
dubadub
LowHeadRoom
My Recent Hi-Fi Haul - Incredible Pieces! Incredible Builder. Who was he?
Replies
10
Views
893
grataku
G
M
3D printed goodies for tube amp experimenters
Replies
0
Views
166
mike567
M
R
Conversion from SE to Differencial
Replies
8
Views
441
jean-paul
jean-paul
A
Tube Transformers DIY
Replies
2
Views
263
50AE
50AE
B
VTA M125 triode switch bypass
Replies
5
Views
246
brandon3212276
B
I
Why does killing my EL38 tube sound so good?
Replies
32
Views
6K
smoking-amp
smoking-amp
E
Output penthode with MOSFET driver
Replies
23
Views
1K
emosms
E
Q
Dynaco ST-70 bias for modern production tubes
Replies
17
Views
647
stenak
stenak
Windcrest77
Making high voltage umbilical aircraft inter-connects
Replies
39
Views
1K
Windcrest77
Windcrest77
deafbykhorns
GU-50 Tube
Replies
1
Views
269
JonSnell Electronic
JonSnell Electronic
Frank40
Battery biased tubes
Replies
21
Views
992
6A3sUMMER
6
D
Conrad Johnson PV10A voltages
Replies
10
Views
642
Dubcraftee
D
R
Triode connected pentode close to ECC88?
Replies
30
Views
2K
rafafredd
R
C
Troubleshooting hum in an Elekit TU-8200
Replies
5
Views
239
chobbs42
C
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