• 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
Shoog
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Hum free 5687 AC filament supply, is it possable ?
Replies
17
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6K
Shoog
Shoog
E
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Bias filtering
Replies
3
Views
1K
Sch3mat1c
Sch3mat1c
Jaap
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Transformer voltage too high for 300B amp
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4
Views
2K
SY
SY
reaction
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Need info about 5G84 tube
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3
Views
2K
audiousername
audiousername
S
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More shopping help please - GE Combo 330
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0
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1K
SNAILDARTER
S
R
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My audionote Kit one have problem on 300B cathode terminal
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4
Views
2K
ramnmic
R
Z
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6v6 and OPT with 10-12k ohm(primary impedence)
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1
Views
2K
Sch3mat1c
Sch3mat1c
percy
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Any comments on Eico HF-14 and HF-85
Replies
5
Views
6K
anatech
anatech
Z
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Mysterious Output Transformer....
Replies
6
Views
2K
Dave Cigna
Dave Cigna
S
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RF Noise in Power Supply
Replies
2
Views
2K
Sch3mat1c
Sch3mat1c
Mr. Triatic
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SRPP headphoneamp with E88CC
Replies
13
Views
4K
fscarpa58
F
M
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89 db is it enough ?
Replies
18
Views
10K
MlinarS
M
brian t
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tube amp
Replies
7
Views
2K
richwalters
richwalters
SY
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Tubes and magnetic fields
Replies
35
Views
6K
Sch3mat1c
Sch3mat1c
SHiFTY
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Just bought a leak stereo 20 (pics!)
Replies
4
Views
3K
Shoog
Shoog
Trout
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Will This Preamp Work
Replies
6
Views
2K
Trout
Trout
B
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Driver tube for 45 interstage 1:1
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1
Views
2K
barossi
B
M
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newbie to DIY
Replies
1
Views
1K
audiousername
audiousername
A
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Troubl-shooting heater voltage for filament
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12
Views
3K
andy2
A
S
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1/8" Aluminum for top plate?
Replies
23
Views
5K
jackinnj
jackinnj
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