• 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
B
VTA M125 triode switch bypass
Replies
5
Views
266
brandon3212276
B
I
Why does killing my EL38 tube sound so good?
Replies
32
Views
6K
smoking-amp
smoking-amp
E
Output penthode with MOSFET driver
Replies
23
Views
1K
emosms
E
Q
Dynaco ST-70 bias for modern production tubes
Replies
17
Views
897
stenak
stenak
Windcrest77
Making high voltage umbilical aircraft inter-connects
Replies
39
Views
2K
Windcrest77
Windcrest77
deafbykhorns
GU-50 Tube
Replies
1
Views
278
JonSnell Electronic
JonSnell Electronic
Frank40
Battery biased tubes
Replies
21
Views
1K
6A3sUMMER
6
D
Conrad Johnson PV10A voltages
Replies
10
Views
658
Dubcraftee
D
R
Triode connected pentode close to ECC88?
Replies
30
Views
2K
rafafredd
R
C
Troubleshooting hum in an Elekit TU-8200
Replies
5
Views
244
chobbs42
C
E
fillament hum balancer trimpot
Replies
19
Views
1K
emosms
E
J
Tube Amp One Channel Dropout
Replies
3
Views
153
grovergardner
G
SpreadSpectrum
Corona: An Ultra-Low Distortion A2 DHT SE Amp Prototype
Replies
455
Views
115K
zintolo
Z
WntrMute2
Which Pairs to Twist?
Replies
9
Views
381
wparks
wparks
T
Overall gain of Shishido LCR Phono
Replies
5
Views
220
waltube
waltube
brommermartin
6F8G tube
Replies
3
Views
323
brommermartin
brommermartin
U
Mercury rectifier question
Replies
1
Views
189
JonSnell Electronic
JonSnell Electronic
zincho
ECL86 PCL86 PP AMP
Replies
5
Views
496
zincho
zincho
M
mV meter
Replies
4
Views
378
Milkduds
M
H
Stereo Voice 120A Amplifier Receiver schematics
Replies
1
Views
630
PineappleDave
P
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