• 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
Loctal to octal
Replies
12
Views
585
betula
B
andyjevans
Anyone used P2 or LP2?
Replies
14
Views
974
Fei
F
J
Operating Points of Fi 2A3 / 3 Tube 3 Watt Direct Coupled Amplifier (Lipman)
Replies
57
Views
10K
joneci
J
kmtang
Chinese 300B tubes
Replies
3
Views
827
sumotan
S
R
Power supplies for Pilot AA-903b
Replies
3
Views
234
astouffer
astouffer
wrenchone
Characterizing Audio Output Transformers
Replies
5
Views
868
wrenchone
wrenchone
T
Is GlassWare still functional?
Replies
47
Views
4K
duck552
D
M
Intermittent noise on one channel of preamp
Replies
14
Views
1K
nosmarts
N
Sorento
Hybrid Transimpedance Tube Amp Sim
Replies
44
Views
3K
UR5FFR
U
TheGimp
eBay 12AX7/12AT7 preamp
Replies
4
Views
546
TheGimp
TheGimp
trobbins
Global feedback stability improvement with current feedback
Replies
4
Views
798
trobbins
trobbins
M
Best EL84 SE amplifier?
Replies
62
Views
39K
Stian
S
B
Can I use Rec Out on Pioneer SX410 as a pre out
Replies
18
Views
735
bazza31
B
Ercouper
Modding a Velleman K4040
Replies
104
Views
6K
Ercouper
Ercouper
C
Dynaco S70 Power supply wire help
Replies
6
Views
448
rayma
rayma
N
Frequency Response in LC circuit
Replies
27
Views
2K
jhstewart9
jhstewart9
M
PC PSU to power tube preamp boards?
Replies
5
Views
666
Megabyte
M
TheFinisher
Counterpoint SA-2000 improvements/upgrades
Replies
2
Views
700
cvanc
C
kimbal
What the hell is Class A3?
Replies
39
Views
5K
ErikdeBest
E
Pure_Brew
Jolida 502BRC bias issue questions
Replies
2
Views
511
Pure_Brew
Pure_Brew
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