• 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
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Build Log of 100+ watt Pete Millet “Engineer’s Amplifier”
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105
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10K
DuRWooDJBL
D
djn
I found these in a box of old military electronics parts
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16
Views
885
JMFahey
JMFahey
NickKUK
EZ81 on an 75V elevated heater supply?
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11
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815
gorgon53
G
skrstic
DC link capacitors in PS
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18
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2K
Fei
F
M
Info or ID request.
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5
Views
404
Midnightmayhem
M
Circlotron
Zero bias class B2 triode driver transformer
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38
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2K
Fuling
Fuling
O
Which Preamp for Less Than Great Sounding CDs?
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94
Views
5K
oltos
O
R
Tubeworks service manual
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1
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333
6A3sUMMER
6
A
STC 4033X info
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1
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314
emk2
emk2
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ECC83 + ECL86 guitar amp pondering...
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20
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1K
tubelectron
tubelectron
C
Please explain…
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116
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4K
abstract
A
B
Hot PT plus high plate voltage on 6EU7
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17
Views
406
Bobmag
B
M
My Bewitch 6550 cooked bias resistor
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16
Views
876
Potentiallyincorrect
Potentiallyincorrect
jan.didden
Tube amp high-voltage delay
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133
Views
21K
schiirrn
S
A
Bipolar Cap Mult DC Heaters
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45
Views
2K
Merlinb
Merlinb
I
What is the probable configuration of a 6BX7 amp I used to own?
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45
Views
5K
45
4
PretentiousFood
6E5P Microphony
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25
Views
2K
6A3sUMMER
6
dubadub
The Runt - A nice little SE EL84 amp.
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6
Views
940
dubadub
dubadub
G
PF86
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4
Views
632
Merlinb
Merlinb
T
Are my tubes going gassy?
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8
Views
591
toshiba_nz
T
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