• 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
W
Unexpectedly good EL84 amp
Replies
237
Views
135K
krca45
K
M
Has anyone used 6DJ8 at B+ around 150V
Replies
19
Views
1K
mashaffer
M
tonescout
identifying valve 6N1 Pi-EB (an old useless rapirman cited them as 6DJ8 replacements?)
Replies
63
Views
3K
6A3sUMMER
6
B
A 6P13S sweep tube amplifier build
Replies
11
Views
1K
kodabmx
kodabmx
B
SE amp output to speaker w/ high pass crossover, and to ‘high level input’ for bass amp
Replies
8
Views
614
Chris Hornbeck
Chris Hornbeck
Gonecat
Uses for Ampex input transformers in a DIY build
Replies
11
Views
1K
Gonecat
Gonecat
T
Tube DAC with TDA1541 and 6Ж52П pentode (6J52P or 6Z52P ??)
Replies
19
Views
1K
revintage
revintage
E
RCA JAN CRC 5V4G Rectifier heater glow bright orange in preamp but work perfect.
Replies
6
Views
731
grovergardner
G
T
Alternatives to Belton Octal Tube Sockets?
Replies
2
Views
456
rayma
rayma
M
Spacing requirements between 300B tubes
Replies
7
Views
541
6A3sUMMER
6
dubadub
On Cathode Feedback
Replies
2
Views
544
OldHector
OldHector
M
GZ34 / 5AR4 Maximum Forward Plate Voltage
Replies
13
Views
1K
trobbins
trobbins
dubadub
topology and induced hum with EDCOR iron...
Replies
19
Views
978
jhstewart9
jhstewart9
E
Help identify
Replies
2
Views
314
Davey
D
U
Channel Master (or Sanyo) Model 6601 integrated 10 Tube Amplifier
Replies
7
Views
1K
MarBromb
M
SoaDMTGguy
Accidentally fried my audio interface at the output jack, could this indicate a short in my amp?
Replies
7
Views
686
thisusername
T
OldHector
EL12N in hifi
Replies
46
Views
19K
andyjevans
andyjevans
AudioFanMan
Star ground on metal chassis
Replies
26
Views
3K
kodabmx
kodabmx
H
Help deciding on a low cost 15-20 watt triode push-pull amplifier design
Replies
108
Views
14K
hbc
H
J
How to spend on transformers?
Replies
34
Views
2K
6A3sUMMER
6
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