• 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
M
Cathode followers stage and interstage transformer
Replies
6
Views
295
Midnightmayhem
M
rongon
Recurring Question: Low Gain Tube Preamp?
Replies
31
Views
5K
jgf
J
F
Super stumped on this guitar amp repair
Replies
8
Views
255
hooman
hooman
Windcrest77
Ambitious direct bias PSE 300B with dual PSUs
Replies
16
Views
994
Windcrest77
Windcrest77
tiefbassuebertr
Creating High Voltage for Tube Power Supply: Serial/Shunt Regulator and Passive RC Filter Chain with Choke/Inductor; Pros and Cons
Replies
13
Views
1K
VT-52
VT-52
jhstewart9
300B Problems Covered in Sound Practices Magazine Issue 16
Replies
6
Views
565
bondini
bondini
S
Tektronix type 564 tube oscilloscope repair
Replies
35
Views
866
as_audio
A
bamavette
Toroidal output transformers, are they as good as EI?
Replies
11
Views
758
aerius
A
SoaDMTGguy
Does this sound like failing tube(s) to you?
Replies
17
Views
411
WhiteDragon
WhiteDragon
W
Buffer preamp point to point suggestions? (Beginner low knowledge and skill )
Replies
1
Views
198
Suncalc
S
SomeJoe
NTC thermistors in series with filament supply
Replies
4
Views
313
SomeJoe
SomeJoe
Cycline3
Audio Research Preamp Restoration Project and Can DIY Improve It?
Replies
13
Views
4K
retailer
R
jkojic
hi all - what is this brown material called please
Replies
35
Views
1K
audio king
audio king
T
Grounding parts on non-conductive Tubelab SSE chassis
Replies
3
Views
184
rayma
rayma
trobbins
Measurements on output transformers for the Williamson amp
Replies
65
Views
8K
Mooly
Mooly
C
Hum from monoblocks when RCA cable is connected
Replies
25
Views
978
Croc
C
E
ECC83 valve running with +100 volts on the grid
Replies
5
Views
309
Merlinb
Merlinb
G
EL84 Amp - Baby Huey
Replies
3K
Views
1M
zintolo
Z
jjasniew
Why not a hobbyist topology?
Replies
32
Views
1K
Sorento
Sorento
T
Tube phase splitter
Replies
229
Views
5K
Tube Radio
T
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