• 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
P
12BH7 in 12AU7 cathode follower circuit
Replies
45
Views
817
perkri
P
pmillett
EL84 "Engineer's Amp" (sort of)
Replies
18
Views
988
Tubelab_com
Tubelab_com
S
EAR834 Clone Zener Diode Temperature Hot ?
Replies
0
Views
69
Scott Muni
S
J
ZOTL LTSpice Model
Replies
0
Views
73
jderimig
J
D
Recommendations for PP EL84 circuits
Replies
95
Views
13K
Adolf Corkscrew
A
T
Fully 21st Century Tube Preamplifier
Replies
16
Views
772
TorroidDoughnut
T
stephe
Mods to "Little Bear" phono-preamp
Replies
95
Views
7K
MrPeach71
M
B
EL34 Baby Huey Amplifier
Replies
2K
Views
386K
Francois G
Francois G
R
Noob Power transformer question
Replies
44
Views
1K
Midnightmayhem
M
R
Help needed to determine if a 2 prong polarized or 3 prong IEC should be a replacement
Replies
17
Views
379
riven67
R
N
6SN7 driving EL34PSE
Replies
11
Views
388
soulmerchant
soulmerchant
dubadub
Poor bass response from a Dynaco EL84 PP amp. Wrong OTs?
Replies
20
Views
510
dubadub
dubadub
P
Knight KN-3050 amplifier meter rectifier
Replies
4
Views
174
podbaydoors
P
M
My custom tube preamp - Full build advice
Replies
85
Views
6K
mr_zener
M
M
Correct sequencing for plate voltage and filament bias in a 12AU7 tube power supply
Replies
4
Views
137
artosalo
artosalo
B
P.Millett DC filament supply
Replies
13
Views
853
pmillett
pmillett
A
DIY CAT SL1 preamp
Replies
110
Views
75K
Algar_emi
Algar_emi
P
Audio Research VSi60
Replies
6
Views
230
petrnyc
P
E
Output transformer core, how much is too much?
Replies
11
Views
601
sajadho1988
sajadho1988
Lingwendil
Kondo KSL-M77 phono preamp clone project
Replies
564
Views
87K
joseespona
J
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