• 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
J
Dynaco ST-70 Mod
Replies
24
Views
2K
jxdking
J
tubedog
ChatGPT can be used to draw triode curves
Replies
6
Views
537
jcalvarez
jcalvarez
N
Saving Dud valves
Replies
0
Views
171
nafunga
N
Wavebourn
  • Poll Poll
Pyramid-IX monoblock, 200W from 4x GU-50
Replies
55
Views
13K
Wavebourn
Wavebourn
jcalvarez
N78 suggested operation voltages in datasheet higher than ratings
Replies
15
Views
475
wg_ski
W
fazildiken
Tube Amplifier Audio feedback high-pitched noise continuous loop
Replies
32
Views
859
Diabolical Artificer
Diabolical Artificer
andyjevans
EL84 triode as driver tube vs SV83, 6P15P....
Replies
27
Views
10K
fortyfive
fortyfive
jan.didden
Jan's HV regulator
Replies
123
Views
18K
mz543578854
M
NickKUK
Parallel cascode (1956 thesis)
Replies
14
Views
1K
Sorento
Sorento
D
120Hz 6N2 Valve pre
Replies
22
Views
454
dj_holmes
D
G
Questions about DC coupled parafeed
Replies
0
Views
168
Ginjetto
G
A
Carnhill made Sowters
Replies
81
Views
11K
gupsta
G
T
Cascode CCS for Cathode Follower
Replies
11
Views
588
euro21
E
piecor
A circuit without a cathode resistor?
Replies
25
Views
1K
Wavebourn
Wavebourn
M
Mystery 6SL7GT
Replies
13
Views
501
ceylon.mooney
C
N
Sansui output transformers
Replies
61
Views
2K
niznai
N
Windcrest77
Newby question: Hybrid bridge rectifier
Replies
7
Views
402
Tubelab_com
Tubelab_com
P
Marantz Model 9 - Restoration resistor choice
Replies
27
Views
887
Pegasus123
P
tonescout
Help on single ended 211 question
Replies
6
Views
389
vinylkid58
vinylkid58
Nemeske
Ibanez TSA15 head retubing and setting the correct bias
Replies
3
Views
135
Nemeske
Nemeske
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