• 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
A
Chinese FU-32 tube. What actually is it?
Replies
29
Views
22K
MHbach
M
elac310
Uesugi 211 (vintage 1971)
Replies
72
Views
6K
elac310
elac310
Okietube
6BX7-6BXL SET amplifier for audio
Replies
15
Views
858
jhstewart9
jhstewart9
jam
Frank's Ultimate Tube Preamp
Replies
497
Views
280K
RPS75
R
Q
Cathode bias mod for Dynaco ST-70?
Replies
26
Views
776
6A3sUMMER
6
C
VTA ST120 - Troubleshooting - Only 1 Channel Operational
Replies
2
Views
149
Francois G
Francois G
jkojic
Dynavox VR70-11E are there internal fuses please
Replies
0
Views
87
jkojic
jkojic
R
Output Transformer Interleaving
Replies
23
Views
1K
50AE
50AE
bondini
Diego Nardi Monophono mid-band gain?
Replies
15
Views
556
bondini
bondini
mobyd
VTL TL2.5 preamp remote poor range.
Replies
4
Views
374
mobyd
mobyd
A
BC accoustic EX888.1
Replies
1
Views
433
Aghawa
A
Q
24 hour burn in of tubes
Replies
11
Views
421
Michael C
M
B
Magic eye "Off" mode
Replies
6
Views
422
Bigwolf
B
P
rivera slavemaster issues
Replies
0
Views
98
PhantomBox
P
M
Papworth M100 Mono Bloc Valve/Tube Amp
Replies
21
Views
696
markmcder
M
C
Curcio Audio
Replies
5
Views
533
Ray Waters
R
Merlinb
Output impedance falls by more than the feedback factor?
Replies
18
Views
858
waltube
waltube
revintage
Harmonic pattern of SE
Replies
72
Views
2K
waltube
waltube
jx86
advice on how to better organize collection
Replies
0
Views
113
jx86
jx86
A
Is it safe At 85% idle Two 6L6 GC RCA ?
Replies
11
Views
366
dubadub
dubadub
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