• 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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Heater of tube
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2
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2K
Miles Prower
Miles Prower
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40W class A push pull amp with JJ 2A3-40w possible?
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18
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11K
SY
SY
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otions for drawing tube schematics on Mac..?
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14
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4K
planet10
planet10
dmag
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sds labs into Pas3
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1
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2K
tkwou
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whitelabrat
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Screen Drive Push Pull ideas
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62
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15K
whitelabrat
whitelabrat
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Preamp Aikido : 6ax5GT,12au7,2c51
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0
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3K
spiritm2r
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T
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1946 philco amp, tuner, record player
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2
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3K
Eli Duttman
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E
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YAAGLI - Yet Another Aikido Ground Loop Issue
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18
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6K
David Davenport
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tomchr
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Recommended spacing for multiple 5AR4's
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4
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1K
Richard Ellis
Richard Ellis
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valve rectifier in PSUD
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21
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5K
Sheldon
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el156
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4K or 5K Output Transformer
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20
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9K
Cassiel
Cassiel
el156
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Telefunken schematics
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0
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2K
el156
el156
E
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Using a CCS on SE Output Stage
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8
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2K
Globulator
Globulator
L
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Voltage Gain on Long Tailed Drivers
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7
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lassoharp
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E
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AD1 Operating Question
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0
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1K
eeyore
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DEQ+TheEnd
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Changing plate resistor in live circuitry.
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10
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4K
Cassiel
Cassiel
E
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MA XDSE KT88 vs YAQIN MC-100B KT88
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3
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4K
Globulator
Globulator
R
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Favourite EL34 circuit
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1
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4K
ray_moth
ray_moth
jmillerdoc
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Low voltage 6922 preamp...wanting a schematic
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3
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3K
xlinuxer
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Adding caps to prevent oscilation in AF 5687
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9
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Arnulf
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