• 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
Bas Horneman
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You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
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56
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20K
Gluca
Gluca
Gluca
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sovtek 300B
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3
Views
6K
Gluca
Gluca
U
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I have a pair of JBL control 5 speakers, which valve amp design you recommend?
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4
Views
4K
ultrapato
U
D
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Heathkit S-33 Information needed.
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19
Views
7K
DoomPixie
D
M
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No bang, no flash, just music!
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62
Views
21K
AudioIng
A
kmtang
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Purist 2 Line Amp
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5
Views
2K
kmtang
kmtang
imix500
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Altec A150C and 531B psu
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13
Views
3K
imix500
imix500
J
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radio receiver
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4
Views
1K
jaudio
J
M
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CF biasing and load ???s
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19
Views
3K
SY
SY
S
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How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
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1
Views
2K
SHiFTY
SHiFTY
T
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Pioneer SM83 and 500k pot
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0
Views
2K
Tandrews
T
D
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Line stage preamp, based on SY's "Heretical Unity gain line stage"
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23
Views
15K
rdf
rdf
L
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5k to 100 or so line transformers
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1
Views
2K
Eli Duttman
E
andyjevans
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Help me build my Choke I/P preamp PSU
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9
Views
2K
SY
SY
I
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Svetlana SV572-10 ???
Replies
24
Views
22K
Dogie_Hogan
Dogie_Hogan
teodorom
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2A3 Sovtek characteristics
Replies
16
Views
18K
teodorom
teodorom
A
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Help with 6B4G PP amp.
Replies
4
Views
4K
Dogie_Hogan
Dogie_Hogan
valveitude
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Spud Farmin' Pt. Deux
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8
Views
2K
valveitude
valveitude
S
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0A3 and pentode questions (quickie)
Replies
8
Views
3K
Sch3mat1c
Sch3mat1c
E
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Pinging "DoomPixie"
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0
Views
768
Eli Duttman
E
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