• 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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Cayin/Sparks A- 50T schematic.
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4K
Laila2
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Connecting valve shields to earth
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5
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cr0wl3y
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Fixed bias failure B+ switch off protection
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7
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Brit01
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zigzagflux
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Help complete the 300B schematic
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13
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45
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4ohm output transformer with 8ohm speaker
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2
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ChrisA
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First post/build
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rman
rman
Empee
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Cathodyne: Can someone please help me fill in the blanks ?
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12
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Empee
Empee
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EL-34 to 6P3S-E
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21
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bigwill
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O
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KT88 grid stopper
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4
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DF96
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Stee
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6922 sepp with Balanced Gains
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4
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1K
Stee
Stee
HideawayStudio
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DIY Dual Channel Active Tube Tone Control
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marcioguth
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Shindo schematics?
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30
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tiefbassuebertr
tiefbassuebertr
andyjevans
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PP question - best driver stage!
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23
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kikik
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new 6080 dc pp
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12
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singh santa
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jazzbo
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Hashimoto A105 - some results (ECC99)
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9
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nicoch58
nicoch58
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SE amp problem
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1
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1K
kevinkr
kevinkr
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tubes for these OPT?, pri 1.75Kohm, sec 2.5, 4, 8ohm, taps 20%, weight 4Kg
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4
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hidnplayr
hidnplayr
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Can I build an MC30?
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3
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astouffer
astouffer
Lingwendil
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6SL7 and 6AS7 PP amplifier, design advice needed
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5
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3K
Lingwendil
Lingwendil
Tfan69
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about 83 mercury rectifier
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13
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Miles Prower
Miles Prower
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