• 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
phn
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Newbie PSU question
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25
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5K
phn
phn
E
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diy tube amp problem
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4
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1K
teemuk
T
dsavitsk
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Transformer Secondary Power
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7
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2K
Sheldon
S
dsavitsk
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Power transformer quality differences
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2
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2K
kevinkr
kevinkr
H
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Balanced 300B output for headphones or loudspeakers?
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0
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1K
HighTech
H
J
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sub-mini valve
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3
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2K
Geek
Geek
dsavitsk
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Physically small rectifier tube with 5V heaters
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7
Views
2K
Geek
Geek
dsavitsk
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Distorting 5687 preamp circuit
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13
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5K
arnoldc
A
J
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heater supply questions
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9
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2K
SHiFTY
SHiFTY
V
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Loud buzz and hum from one monoblock!!!
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5
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3K
Jeb-D.
Jeb-D.
J
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First amp for a new in valves
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2
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2K
EC8010
EC8010
dmitriy167
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Severe oscillation in 6L6 amp
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23
Views
4K
Giaime
Giaime
F
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311T (211 alike) HIGH power triode
Replies
8
Views
3K
firefart_1st
F
BigOx
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EL84 PP Diy. Pls help me!!!
Replies
24
Views
9K
planet10
planet10
R
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How to tweak warmth to a power amp?
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5
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2K
lndm
L
J
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resistors across the heater voltage then the middle is grounded
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19
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2K
cogsncogs
cogsncogs
D
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S-5 Electronics Tube Amp Kit
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5
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2K
gmilitano
gmilitano
D
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Ultrasonic heaters
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53
Views
9K
timpert
T
C
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Substituting dual triodes
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13
Views
4K
SY
SY
J
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Installing tubes upside-down? Bad? Maybe it doesn't matter?
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11
Views
2K
cogsncogs
cogsncogs
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