• 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
M
350 kW valve amplifier from 1934
Replies
57
Views
4K
Chris Hornbeck
Chris Hornbeck
merlin el mago
26 preamp Rod Coleman V8 problem
Replies
39
Views
2K
merlin el mago
merlin el mago
M
Simulate OPT SX-11 at low frequency
Replies
46
Views
2K
45
4
J
How to Bias this 6L6 output stage?
Replies
11
Views
1K
John222
J
B
Selmer Treble n Bass 50w amp reverb tank issue
Replies
0
Views
290
bibio123
B
O
Interested in Valves
Replies
11
Views
683
Bigun
Bigun
W
EICO HFT-92 reception
Replies
2
Views
394
wdizard
W
stephe
Boyuurange A50 300B Review + Mods Series
Replies
110
Views
26K
Sonnyhad
S
AudioFanMan
Kegger / Skunkie KT120 Monoblock iron layout
Replies
28
Views
2K
stephe
stephe
N
question on using Lundahl Filament Choke LL2733
Replies
3
Views
482
ErikdeBest
E
lavane
R-Core transformer question
Replies
6
Views
593
NareshBrd
N
dwjames
Sun Audio SV-300B PP - Overshoot on square wave test
Replies
58
Views
3K
6A3sUMMER
6
M
Obbligato PSU capacitors anyone?
Replies
10
Views
961
mdpaudio
M
dubadub
How do I calculate the capacitor values in a SE amp? Coupling + k bypass
Replies
23
Views
2K
Suncalc
S
J
Kegger/Blueglow KT88 frequency response
Replies
35
Views
2K
poseidonsvoice
poseidonsvoice
Randy Bassinga
100 ohm to 8 ohm
Replies
8
Views
597
Randy Bassinga
Randy Bassinga
D
CCS keeps failing
Replies
58
Views
6K
marigno
marigno
B
valve testing
Replies
0
Views
264
Black Stuart
B
Diabolical Artificer
Cheap Chinese "VU" meters, meters on valve amps?
Replies
22
Views
2K
theAnonymous1
theAnonymous1
T
RCA 8000 Push Pull
Replies
0
Views
219
toshiba_nz
T
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