• 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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Stepped attenuator recommendation...
Replies
33
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9K
TheGimp
TheGimp
E
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Garter cross-coupled feedback
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14
Views
3K
exeric
E
B
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Cap choices coupling
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12
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3K
Conrad Hoffman
C
P
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Output transformer for PP EL34 source
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7
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5K
pof@
P
D
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Before I go ahead and build this...
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55
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6K
kavermei
kavermei
T
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Need the Ogirin Circuit of Bruce Berman
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6
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3K
himalaya
H
B
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use 2 ohm speakers
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9
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2K
atmasphere
atmasphere
B
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Adjusting the sensitivity on a 6e2 magic eye tube
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4
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4K
JimTube
J
B
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mini max pre
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1
Views
1K
h00hbt
h00hbt
B
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TX coupled, pentode linestage
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14
Views
5K
Bandersnatch
B
R
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Eico HF-81 modification opinion
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7
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6K
renarobert
R
N
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CCS and regulated B+
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2
Views
1K
SY
SY
E
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Ask tube rect 5u4c and JJ caps
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0
Views
2K
ervinl
E
grindstone
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soundcard protection Z ???
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2
Views
2K
grindstone
grindstone
A
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Triode Operation Using The Screen Grids As The Control Grid - This Work?
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9
Views
4K
thoriated
T
F
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Precision Electronics S-35 help,
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1
Views
3K
fidopunk
F
J
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Help Choosing Power Supply Voltage Regulator Aikido Phono Amp
Replies
8
Views
3K
SY
SY
E
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Input tube bias
Replies
13
Views
2K
Gordy
G
E
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multiple independent grid biasing from 1 mosfet
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2
Views
1K
exeric
E
M
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Parallel output tubes/valves in push pull. Advantages/disadvantages?
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42
Views
13K
kenpeter
K
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