• 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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Modified Audio Note M7 Tube Pre Amplifier PCB
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rick57
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The most simple tube preamp
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19
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sorenj07
sorenj07
batinal
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KT88 Bias Adjustment
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7
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richwalters
richwalters
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Affordable KT88
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17
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5K
kt88music
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alexmoose
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Are my speakers efficient enough for tubes?
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83
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DigitalJunkie
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Please advice on KT88 Push Pull
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6
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kt88music
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A
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HPHV regulator
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9
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ackcheng
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what do you think of this integrated?
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4
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graeme uk
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lundahl xformers - are they potted?
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6
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KlausB
KlausB
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14gt8...clipping diodes?
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2
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ThSpeakerDude88
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Difference between microphones
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jon_010101
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E182CC - how to connect heater supply?
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2
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jarthel
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Aikido pre tube for Minimum Gain
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13
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ErikdeBest
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NYAL Super-It - removing volume pots, what resistor value to replace them?
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2
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radical
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edjosh23
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Holiday S-5 K-12G
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44
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13K
edjosh23
edjosh23
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Grounded Grid
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0
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jswen
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Giaime
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Giaime's Preamp Finished!!!
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19
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4K
Giaime
Giaime
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Passive preamp with utc transformers
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13
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7K
peci
peci
jane
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Just another PP...
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24
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8K
Tubes4e4
Tubes4e4
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EL34 Push Pull in Class A
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29
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20K
Circlotron
Circlotron
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