• 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
cyrrix
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VT100mk2 - Retubing
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0
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1K
cyrrix
cyrrix
M
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Parallel 6L6 se iron suggestion.
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1
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1K
Eli Duttman
E
W
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Mullard 404? ECL82 amp
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60
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20K
woodturner-fran
W
S
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stern's ecl86 amp
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12
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6K
VT116B
V
M
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Change EL84 from Triode to Ultra linear
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11
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8K
chrish
chrish
7n7is
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Espey AM/FM radio (pentagrid mixer, etc.)
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15
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6K
7n7is
7n7is
rsumperl
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6360 or 6939 as a phase inverter
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3
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2K
rsumperl
rsumperl
nhuwar
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Bias using a ccs as an anode load
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15
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6K
Wavebourn
Wavebourn
B
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DC Tube Heaters
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9
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3K
Vinylsavor
Vinylsavor
studeb
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Why overvoltage on HT?
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14
Views
3K
cerrem
cerrem
M Gregg
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Any thoughts on this circuit?
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118
Views
21K
artosalo
artosalo
mikemac
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Restoration of leak stereo 20: advice pls
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3
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2K
SHiFTY
SHiFTY
rvrazvan
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Tube pre-amp + Class-D amp. any experience?
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9
Views
4K
rvrazvan
rvrazvan
Cassiel
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SE KT88 Amp
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50
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24K
gaborbela
G
M
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Tube regulator
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8
Views
2K
MrCurwen
M
T
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50c5 schematic question
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5
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2K
Eli Duttman
E
TheGimp
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Topology for Schade
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19
Views
5K
Wavebourn
Wavebourn
P
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Adding resistance to OT circuit.
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3
Views
1K
Printer2
P
sixSixSeven
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Me again... matrix decoding w/ tubes?
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1
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1K
rvrazvan
rvrazvan
D
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KT88 bias current keeps drifting
Replies
28
Views
12K
richwalters
richwalters
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