• 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
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advice upgrading output transformers and coupling caps in preamp
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25
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1K
Keremito
K
T
Yet Another QUAD II Restoration
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25
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1K
toniburner
T
pinnocchio
Need help for SE 300B 5K output transformers
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54
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3K
andyjevans
andyjevans
S
Ampli PCL82 + 2A3
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33
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1K
hooman
hooman
P
Is this a bypassed fused cathode of any benefit?
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2
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253
trobbins
trobbins
D
Recently built myself an OTL headphone amplifier using three Svetlana 6N1P tubes
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65
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4K
DrNomis44
D
D
Tubelab SSE grounding
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2
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269
Diyengineer
D
T
10M45 / 10M90 - Plate voltage confusion
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16
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1K
Miles Prower
Miles Prower
J
Tube Amp CAYIN CS-55A.
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0
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118
Jazzmi
J
H
EL95 cathode follower?
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10
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424
Hificat
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S
Hammond 273BX is smoking after putting it in the two diode center tap arrangement
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53
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2K
gerrittube
gerrittube
pjanda1
5k SE Transformer Tests: Monolith, Edcor, Antek, and Tamradio
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27
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1K
pjanda1
pjanda1
DieterK
Broskie Tilt Control
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16
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827
sumotan
S
C
1kV GU50 PP 100W RMS amplifier from a SINGLE PAIR
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23
Views
2K
matejsirk
M
J
What tube amp to build
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130
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9K
Svytoslav
S
L
Codes of a remote control RF (not IR) of Unison Research
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2
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220
loicgagnant
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Miniwatt
Vacuum tube diode destructive test
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42
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1K
Merlinb
Merlinb
P
PP ECL82 amp with cascode inverter
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18
Views
2K
hooman
hooman
SSassen
Cascoded 12AX7 LTP - Stupid good performance?
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153
Views
19K
Svytoslav
S
T
Phono preamp schematic
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12
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1K
spectre6000
S
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