• 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
audio king
Schulmerich 6-228J Carillon Amplifier
Replies
5
Views
1K
paronaram
P
knotscott
Single Channel Dyna/VTA 70 - Can I Remove A Driver Tube?
Replies
15
Views
767
knotscott
knotscott
J
Kegger/blueglow KT88 PS hum
Replies
24
Views
600
20to20
2
mbrennwa
Tube does not want to turn off -- why?
Replies
12
Views
436
mbrennwa
mbrennwa
R
6N6P WCF Help
Replies
11
Views
822
Merlinb
Merlinb
russc
How to identify output faulty valve?
Replies
5
Views
391
russc
russc
jamesfeline
K8011/K8010 PCB build thread
Replies
196
Views
29K
jamesfeline
jamesfeline
Kay Pirinha
4CX250B - any use for them?
Replies
39
Views
2K
opcom
opcom
W
Audio Note M3 phono preamp schematic wanted
Replies
5
Views
332
Wram
W
andyjevans
How to get more drive out of an 01A DHT?
Replies
149
Views
21K
Brinkman
Brinkman
F
ISO NP126 as interstage
Replies
3
Views
206
nicoch58
nicoch58
F
300B Buzz Noise
Replies
10
Views
441
freon2
F
T
Need help for choosing attenuator switch for autoformer
Replies
0
Views
102
Tubenstein
T
K
Troubleshooting one Hot Tube 300B
Replies
15
Views
359
euro21
E
M
Input signal voltage divider versus grid stopper
Replies
3
Views
183
petertub
petertub
lineup
What is 'starved' tube? Examples?
Replies
10
Views
739
benchbaron
benchbaron
E
Question regarding half-μ (actively loaded triode) stage
Replies
10
Views
366
rayma
rayma
jhstewart9
Self Inverting PP Stage Test Results
Replies
39
Views
2K
jhstewart9
jhstewart9
M
6L6 tube recommendations
Replies
19
Views
865
mr ed
M
A
Testing rectifier diodes
Replies
12
Views
530
trobbins
trobbins
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