• 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
P
6240G Data Sheet
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13
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988
luckiestmanalive
L
D
OTL designed by Tim Mellow with 4 6C33C?
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814
Views
191K
djn
djn
djn
Strange noises
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23
Views
628
djn
djn
jayrodge
Type 85 Tube E80L Triode Strapped Zen Inspired Amplifier Build
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23
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1K
jayrodge
jayrodge
VT-52
4P1L Headphone amp
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8
Views
551
VT-52
VT-52
S
ACP4 triode
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4
Views
258
euro21
E
merlin el mago
Adjusting anode voltage with OPT
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7
Views
363
merlin el mago
merlin el mago
ericrosenfield
OTL Tube headphone amp design with 12AU7 and KT66 tubes
Replies
108
Views
3K
ericrosenfield
ericrosenfield
fazildiken
Elektor: Ten Watt Valve Amplifier
Replies
15
Views
648
KeesB
K
L0rdGwyn
Aegis DIY Tube Headphone Amplifier
Replies
228
Views
41K
erhardaudio
erhardaudio
T
Music Angel KT88
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23
Views
2K
Torris
T
M
New loadline calculator
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7
Views
524
mjmvisser
M
H
thermistor for D3As to stop heater glow/flash
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21
Views
1K
VT-52
VT-52
Windcrest77
What driver tube(s) can be operated linearly at 5mA or less?
Replies
20
Views
916
Windcrest77
Windcrest77
X
I want to make a preamp that works with a 12AU7 amplifier stage and a HiFi amplifier stage with a TDA7293
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9
Views
407
WhiteDragon
WhiteDragon
M
Radford Renaissance STA 25 - mains transformer is humming
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2
Views
333
chiily
chiily
G
Triode/Pentode Loadline Calculator
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501
Views
150K
gsmok
G
M
Cathode followers stage and interstage transformer
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6
Views
281
Midnightmayhem
M
rongon
Recurring Question: Low Gain Tube Preamp?
Replies
31
Views
5K
jgf
J
F
Super stumped on this guitar amp repair
Replies
8
Views
245
hooman
hooman
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