• 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
S
What is this component?
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24
Views
1K
hooman
hooman
SebastienL
Is 45 tube so difficult to test?
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10
Views
781
retailer
R
gerrittube
Coupling capacitor formula
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4
Views
389
gerrittube
gerrittube
Windcrest77
Mr. Carlson and George (tubelab) need to get together on this project
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12
Views
977
silverprout
silverprout
A
bias resistor failure following rectifier destruction
Replies
3
Views
239
Sorento
Sorento
SoaDMTGguy
ARC SP-10 power supply voltage regulator problem - output is shorted to ground
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19
Views
616
LuvValve
L
OldHector
EL34s - is 800VDC too much?
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32
Views
1K
gorgon53
G
G
Altec 1569A oscillation issues
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46
Views
3K
grover
G
A
1:10 rule impedance matching
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10
Views
966
rayma
rayma
T
Level shifter using pentode and schade feedback?
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11
Views
597
20to20
2
G
Compact KT88 SET monoblocks
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11
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828
kb2wyl
K
R
Old interstage transformer pinout (B, P, G, F?)
Replies
3
Views
321
directdriver
directdriver
Johnloudb
VT130 Audio Research Repair
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33
Views
1K
Johnloudb
Johnloudb
C
Linear Audio High-voltage Delay for Tube Amplifiers V4
Replies
7
Views
395
jan.didden
jan.didden
Tibetan
6L6WGB Types - Tonal Difference?
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4
Views
366
6A3sUMMER
6
Miniwatt
TV damper diode heater grounding
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8
Views
535
soulmerchant
soulmerchant
F
Film vs. bypassed 'lytics in OTL headphone amp
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1
Views
190
6A3sUMMER
6
W
Elektor Claus Byrith 4-30
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253
Views
33K
6A3sUMMER
6
B
What Qualities Makes A Good Output Transformer
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49
Views
3K
gorgon53
G
B
Voltage double from heater secondary
Replies
18
Views
469
Tom Bavis
Tom Bavis
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