• 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
B
Audio Research Ref 75
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12
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730
rayma
rayma
T
Can I use AC filaments for an 801A tube
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22
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864
schiirrn
S
Z
TAMURA F -913 A
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0
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300
zenzen
Z
funkuncut
High pass filter for Quad II
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9
Views
374
Osvaldo de Banfield
Osvaldo de Banfield
nickdinatale
Yet Another 300B Build Thread
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36
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2K
popa marius
P
H
health check and failure modes of large vintage oil caps, help please.
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2
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337
hbc
H
S
New Tim Mellows OTL project
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793
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179K
zoran2303
Z
K
Lafayette KT-550 bias information
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6
Views
303
kissabout2002
K
pjanda1
Ultrapath Battery Powered WOT preamp question
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2
Views
273
pjanda1
pjanda1
J
Help to understand and adapt Baby Ongaku PS to suit my power transformer...
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42
Views
3K
Monk55
Monk55
H
Mono hifi to tube amp conversion
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4
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336
6A3sUMMER
6
M
Slagle I/V transformers
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15
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1K
6A3sUMMER
6
K
Looking for a DAC under 1500 new or used
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3
Views
357
jan.didden
jan.didden
E
Steep EQ curves in a valve tone control?
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1
Views
234
Markw4
M
R
High Voltage delay - relais
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15
Views
546
Diabolical Artificer
Diabolical Artificer
Plott
Tube IS for IceEdge module
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0
Views
209
Plott
Plott
R
45 tube amp grounding critique (with photo)
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75
Views
6K
6A3sUMMER
6
K
tube amp schematic question
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31
Views
1K
6A3sUMMER
6
P
Marantz voltages
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11
Views
440
directdriver
directdriver
merlin el mago
Zobel for ringing OPT 8010Hz
Replies
6
Views
336
merlin el mago
merlin el mago
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