• 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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Tube Load Line
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10
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Mas Penk
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beardm70mk2-want less b+
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3
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beardman
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R
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Help! is this work?
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9
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huymdt
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Need help with tube test data - fast
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15
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HugoR
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C
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time for a laugh
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12
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Tubelab_com
Tubelab_com
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Pentode to Triode trick.
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4
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James D.
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Input transformer & volume pot
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19
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9K
panos29
panos29
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Please Tell Me How To Modify And Upgrade My Music Angle 845 Amplifier?
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3
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2K
planet10
planet10
Zero Cool
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6550 making a Popping sound?
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4
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richwalters
richwalters
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Best replacment for a 6F2
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1
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zanash
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Pano
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ECC88 at 12 volts
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26
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6K
Tyimo
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panos29
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Push Pull Preamplifier anybody?
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10
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3K
panos29
panos29
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How about this schematic
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2
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cloneforlife
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lgo51
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Pie-eyed and puzzled...
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13
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2K
SY
SY
J
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Any one tried to use subminiature for input tubes?
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23
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jackinnj
jackinnj
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MC34-B Quit working suddenly (newb)
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6
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2K
rcavictim
rcavictim
Trout
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Another New Build Pictures ( G' Amp )
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2
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1K
Trout
Trout
M
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Tube design question
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8
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2K
Mas Penk
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philipbarrett
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Phono Pre-Design Input
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22
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5K
philipbarrett
philipbarrett
Shoog
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PC choke in a preamp ?
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7
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jackinnj
jackinnj
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