• 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
felixx
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speakers for class A ?
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1
Views
1K
Sherman
S
N
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Please Help My Tube Microphones!
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4
Views
2K
Enzo
E
Alastair E
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What is meant by 'Extended Cut-off'?
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5
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2K
Brian Beck
Brian Beck
N
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Bias adjustment question
Replies
20
Views
4K
n0plb
N
valveitude
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DIY Powdered Core Progress Report
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15
Views
3K
smoking-amp
smoking-amp
9
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what do I replace...?
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10
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3K
9am53
9
J
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best long life for my tube
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2
Views
2K
jeapel
J
K
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How is it possible?
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0
Views
1K
kathodyne
K
valveitude
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Parallel SE vs. Single SE Output Question
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19
Views
17K
smoking-amp
smoking-amp
R
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My first tube amp design...check it out.
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8
Views
2K
Radames
R
R
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advances in tube amp design?
Replies
131
Views
26K
rick57
R
abmoggy
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What can I do with 3Q4 Pentode tubes?
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2
Views
4K
Yvesm
Yvesm
T
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signal ground and earth ground
Replies
9
Views
4K
sanford1
sanford1
A
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Balanced Load Design
Replies
28
Views
5K
smoking-amp
smoking-amp
K
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Is it ok to combine output transformers?
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7
Views
3K
krzanik
K
lawbadman
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What kind of tube is this
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10
Views
3K
adalin
adalin
J
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PP output transformer grounded or not ?
Replies
7
Views
4K
analog_sa
analog_sa
K
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Bias supply question
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0
Views
1K
kianbach
K
Miniwatt
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Recommended 6SN7 and 6SL7
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8
Views
17K
gingertube
G
A
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Tube Identification Help Please
Replies
11
Views
2K
artaudio
A
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