• 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
R
Output transformer max primary current
Replies
16
Views
1K
waltube
waltube
Z
My Leak-enstein Stereo 60
Replies
19
Views
3K
andyjevans
andyjevans
emk2
6V6 balanced amp
Replies
9
Views
751
emk2
emk2
B
  • Locked
Tube Amp with no mains transformer --Direct rectified 120VAC input
Replies
28
Views
1K
Sangram
Sangram
C
EAR 834p clone weirdness - high frequencies dropped out
Replies
22
Views
979
coot
C
D
Replicating Pre-amplifiers and Output Amplifiers from Legendary Machines? Ampex 200 Studer J37
Replies
10
Views
850
jcalvarez
jcalvarez
A
Eiclone Input sensitivity
Replies
0
Views
216
AndreaVTS
A
A
Audio Research SP9, which version buy?
Replies
3
Views
637
AndreaVTS
A
N
6BQ6 Question
Replies
5
Views
706
Tubelab_com
Tubelab_com
I
Poor phase margin means speaker cables matter?
Replies
133
Views
10K
Markw4
M
P
Output transformer proximity in a stereo amp
Replies
20
Views
1K
Tubelab_com
Tubelab_com
M
6P3S-E push pull amp build log
Replies
17
Views
1K
jcalvarez
jcalvarez
6
Low Power Balanced Mono-Block Tube Amplifier
Replies
23
Views
3K
6A3sUMMER
6
wrenchone
Puzzling Set of Output Transformers
Replies
21
Views
1K
wrenchone
wrenchone
chrisvw
PSU Schematic advice needed for 6SN7 line stage preamp
Replies
6
Views
939
rayma
rayma
E
Mains transformer-center tapped secondary question
Replies
37
Views
2K
TonyTecson
TonyTecson
I
Buzzing Edcor transformers
Replies
112
Views
7K
Bluesystems
B
J
5 volt filament equivalent to GXU1
Replies
3
Views
303
baudouin0
B
C
Thermistor protection during brownouts
Replies
54
Views
3K
tomchr
tomchr
J
Counterpoint SA-5000 phono stage problem
Replies
63
Views
5K
Drummerboy2
D
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