• 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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Dynaco ST-70 with a GSI board, Parts diagram and any info PLEASE
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9
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4K
Burnedfingers
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3
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Audio Research Reference Phono, anyone?
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0
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3nity
3
DogStone
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TUBE AMP 1946 worth grabbing?
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7
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DogStone
DogStone
bayermar
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Phono Preamp
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51
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15K
Salas
Salas
TheGimp
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6n23p(-ev)
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2
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3K
TheGimp
TheGimp
jmillerdoc
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K-502... upgrading the OPT's with Hammonds
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4
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Jeb-D.
Jeb-D.
jmillerdoc
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K-502 Filament supply (or K-12M)
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6
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2K
Jeb-D.
Jeb-D.
Mosquito
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About the 6AU6s
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19
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3K
Mosquito
Mosquito
pauldune
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DRD amplifier with CCS?
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7
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pauldune
pauldune
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How to design input stage with specific input impedance/pot value
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0
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mahleriana
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tomchr
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How to avoid oscillation and get max BW out of crappy OPT
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15
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pointy
pointy
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Simple Tube amp
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11
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9K
AmadeusMozart
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bst
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James OPT connections?
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2
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ErikdeBest
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jmillerdoc
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AnalogMetric 6L6GC SE amp kit...thoughts about this kit?
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2
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4K
miklos
miklos
pointy
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transistor AC blocker
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9
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2K
Miles Prower
Miles Prower
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Transconductance amplifier based on hybrid cascode
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9
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6K
ErikdeBest
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D
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Identify this mullard
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3
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1K
pointy
pointy
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703A tube source?
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7
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3K
astouffer
astouffer
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Bias transformer question
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4
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1K
Captn Dave
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happycat
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Wanted Arkay SP6, Knight 83YX768 schematics
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6
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BobRoberts
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