• 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
7N7
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Instock designer in potential lawsuit!!
Replies
18
Views
5K
7N7
7N7
Bas Horneman
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Battery bias?
Replies
53
Views
14K
Bas Horneman
Bas Horneman
Magnetmaz
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to DIY or not to DIY
Replies
11
Views
3K
Bas Horneman
Bas Horneman
Joel
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good sound with cheapo chokes
Replies
68
Views
9K
fdegrove
fdegrove
A
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Troubleshooting Problem in Tube Preamp
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3
Views
2K
fdegrove
fdegrove
G
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Output impedance
Replies
8
Views
2K
Sch3mat1c
Sch3mat1c
Joel
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the OTHER tubes forum=yuck!
Replies
46
Views
7K
Bas Horneman
Bas Horneman
C
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counterpoint sa-7(volume pot value)
Replies
39
Views
9K
EC8010
EC8010
Bas Horneman
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Parallel feed OT
Replies
25
Views
5K
Bas Horneman
Bas Horneman
P
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2 output transformers in 1 amp?
Replies
2
Views
2K
fdegrove
fdegrove
SuppersReady
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Trying to find............
Replies
4
Views
2K
SuppersReady
SuppersReady
G
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DIY Tube Microphone preamplifier
Replies
1
Views
3K
fdegrove
fdegrove
tone
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toroid Transformer as power Transformer for tube
Replies
7
Views
5K
tone
tone
D
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Kailin CMPDH300 Tube Power Amplifier
Replies
66
Views
10K
deuey
D
A
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SEPP for philips 800 ohm loudspeaker
Replies
3
Views
4K
316a
316a
Circlotron
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Balancing output tubes by changing heater voltage.
Replies
8
Views
3K
Circlotron
Circlotron
P
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Old tube amp
Replies
18
Views
8K
fdegrove
fdegrove
316a
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Push Pull Output Stage Question
Replies
4
Views
3K
Circlotron
Circlotron
W
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New Guy w/my Foreplay
Replies
38
Views
7K
7N7
7N7
Jaap
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anyone tried 12HG7 as a driver ?
Replies
5
Views
6K
Jaap
Jaap
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