• 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
Leemhuis01
Tube Amplifier Design
Replies
64
Views
8K
jcalvarez
jcalvarez
T
Using an unused filament winding to buck voltage on power transformer
Replies
22
Views
2K
tizman
T
L
Voice of Music 1428
Replies
12
Views
822
HollowState
HollowState
R
Question regarding bias on my Conrad Johnson MV50..
Replies
9
Views
1K
Armstrong Audio
A
C
Unison S8
Replies
20
Views
2K
0519
0
TheGimp
eBay 300B PC board kit
Replies
223
Views
25K
TheGimp
TheGimp
C
Unison Research S8, let's build it!
Replies
12
Views
9K
as_audio
A
0
Unison Research S8
Replies
0
Views
359
0519
0
L
LED wiring for power indicator
Replies
5
Views
682
lordearl
L
M
More Expensive OPT for SE
Replies
29
Views
2K
euro21
E
A
Simple AC Heater - 6c33c - failing
Replies
13
Views
809
nafunga
N
VinylHampton
Marantz Basic Amplifier aka Model 2
Replies
16
Views
2K
Alex C
A
J
Help/Advice converting a 572B amplifier to a 211 based amplifier
Replies
5
Views
669
Chris Hornbeck
Chris Hornbeck
L
Dynaco SCA35 and headphones
Replies
16
Views
907
directdriver
directdriver
P
Rogers Cadet 3 intergrated schematic
Replies
9
Views
699
Paul Rayson
P
M
tube question
Replies
5
Views
636
mrorionrob
M
D
Seeking help with Maple Tree SS+ Clone build
Replies
14
Views
626
DesmoJEC
D
M
Edcor Guitar Amp OPT for SE HIFI
Replies
7
Views
625
SemperFi
S
L
Newbie questions about winding transformers
Replies
13
Views
783
astouffer
astouffer
D
EL34 Push-Pull: big temperature differences between the 4 tubes - problematic?
Replies
22
Views
2K
dvdr
D
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