• 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
pjanda1
5k SE Transformer Tests: Monolith, Edcor, Antek, and Tamradio
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27
Views
1K
pjanda1
pjanda1
DieterK
Broskie Tilt Control
Replies
16
Views
809
sumotan
S
C
1kV GU50 PP 100W RMS amplifier from a SINGLE PAIR
Replies
23
Views
2K
matejsirk
M
J
What tube amp to build
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130
Views
8K
Svytoslav
S
L
Codes of a remote control RF (not IR) of Unison Research
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2
Views
199
loicgagnant
L
Miniwatt
Vacuum tube diode destructive test
Replies
42
Views
1K
Merlinb
Merlinb
P
PP ECL82 amp with cascode inverter
Replies
18
Views
2K
hooman
hooman
SSassen
Cascoded 12AX7 LTP - Stupid good performance?
Replies
153
Views
17K
Svytoslav
S
T
Phono preamp schematic
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12
Views
962
spectre6000
S
C
Hum from monoblocks when RCA cable is connected
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22
Views
665
baudouin0
B
P
uTracer 3+ How do I measure double triodes, curve tracing, and emission vs GM?
Replies
12
Views
434
Merlinb
Merlinb
G
Opinions on my Balanced input SE SiC Mosfet DC-Coupled Paralleled 807 Parafeed Headphone amp Design
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0
Views
142
Ginjetto
G
T
Heathkit A9 question
Replies
60
Views
3K
Tube Radio
T
andyjevans
Phase splitter choices on input of PP amp
Replies
117
Views
8K
Miles Prower
Miles Prower
Pedaler
Jolida JD-302b Help Identify Mods
Replies
17
Views
649
nerdorama
nerdorama
S
Help with CCS
Replies
19
Views
475
Staticx
S
S
Stereo Tube Amp Design Not Working
Replies
21
Views
749
sander19
S
Robhoe71
EL84 Push-Pull direct coupled by KeesB
Replies
71
Views
5K
KeesB
K
pmillett
Posted "NuClassD" amp design: 50W hybrid class-D / Korg Nutube
Replies
84
Views
20K
turion64
turion64
J
Sun Audio 2A3 Modifications
Replies
46
Views
10K
andyjevans
andyjevans
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