• 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
T
FILAMENT POWER SUPPLY: RECTIFIER BY MOSFET OR SIC ?
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1
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219
euro21
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hooman
Montreal Audio Festival 2025
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1
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183
hooman
hooman
MissionX
Fisher Console Amp Channel output
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14
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671
MissionX
MissionX
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External OPTs : Any reason why not?
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17
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561
baudouin0
B
B
Unknown Pre tube for circuit. Help Please
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50
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Tom Bavis
Tom Bavis
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Help to understand why EL84 SE amp clipping
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47
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gijser
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kmtang
CARY CAD-805-RS balance input circuit
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2
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268
kmtang
kmtang
gerrittube
Add a subwoofer output to driver stage
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0
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122
gerrittube
gerrittube
Zero Cool
Unhumping a Magnavox
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19
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641
Zero Cool
Zero Cool
kmtang
Anyone tried using the switching power supply module for tube amp
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42
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wrenchone
wrenchone
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Audio Note Quest 300 wiring 120v
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315
kiran1103
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Audio Research D115 repair
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7
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403
Dilbert
D
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Eric Hayes FOUND Tal 1773
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9
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mckhumboldt
M
A
Help!! 6AQ5 SE amp
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2
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327
Tom Bavis
Tom Bavis
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Is this the correct way to power the filament of a 12AU7 with 6.3V
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7
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320
egellings
E
longspeak
Output tube distortion comparison
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32
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longspeak
longspeak
swingarm63
Circuit ideas for KT66 stereo amp
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94
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swingarm63
swingarm63
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Integrated stereo triode strapped 807s
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31
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krca45
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stenak
6761 Tubes
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3
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276
stenak
stenak
waltube
SOFIA TUbe tester users
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0
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127
waltube
waltube
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