• 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
Klimon
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Value of grid leak resistor
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4
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3K
kevinkr
kevinkr
T
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Amplifier identification
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3
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2K
-=terran=-
T
C
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best type cap for preamp PSU
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4
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2K
cbutterworth
C
W
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Are these tubes worth annything?
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2
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2K
tjabring
T
astouffer
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A better LDO heater regulator
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6
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2K
Eli Duttman
E
georgehifi
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Comments on this circuit
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10
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2K
Wavebourn
Wavebourn
Sunsun22
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What is the correct plate voltage in this circuit?
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2
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1K
gingertube
G
R
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Math to calc optimal voltage of tube dac to match amp input sensitivity?
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7
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2K
riotubes
R
Nordic
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Some cathode follower questions
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12
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4K
Nordic
Nordic
nickds1
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Heater current monitoring...
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2
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2K
Alain Dupont
Alain Dupont
C
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on-off switch position in PSU
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6
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2K
Nordic
Nordic
T
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Anyone please explain"What is an A1,A2 in SE amp?
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8
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4K
Tweeker
T
J
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any feedback on Russian gas regulators like SG4S and etc.?
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0
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2K
jarthel
J
B
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The good, the bad, and the ugly OTL amplifiers
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46
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16K
ErikdeBest
E
B
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Anyone have a Welborne Labs amp?
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2
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2K
deuceman
D
P
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Any1 have an Osmond PCB library for tubes?
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0
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1K
PRNDL
P
bembel
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Spice Error
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2
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3K
bembel
bembel
Klimon
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Steve Bench PP loadlines
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0
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2K
Klimon
Klimon
P
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Conrad Johnson PV 7 problem
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8
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4K
Peppe
P
A
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hum in 1 channel
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3
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2K
HollowState
HollowState
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