• 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
C
6DJ8 current source
Replies
4
Views
903
euro21
E
C
Single pair 100W EL34 amplifier according to Mullard DTS
Replies
22
Views
4K
baudouin0
B
J
Confused as to the maximum AC voltage per plate of a 5AR4...
Replies
14
Views
1K
joneci
J
G
LCD display monitor for tube amp
Replies
14
Views
1K
jcalvarez
jcalvarez
knotscott
My System Has Gone Horizontal Hybrid for 2023
Replies
4
Views
600
knotscott
knotscott
A
Transformer calculation on 8417
Replies
1
Views
374
baudouin0
B
E
triode 26 as driver for triode 45
Replies
19
Views
2K
LongRanger
L
panos29
Grid Current, how much?
Replies
5
Views
1K
6A3sUMMER
6
Koifarm
Retro nixie volume indicator
Replies
81
Views
22K
Pano
Pano
J
My old 1993 tube amplifier and 2023 SPICE
Replies
32
Views
2K
JohanBE
J
B
FM tuner finished
Replies
4
Views
617
baudouin0
B
B
Cathode Follower Voltage Rails/Headroom in Class B Output Stages
Replies
7
Views
672
BJosephs
B
L
Desoldering compactron sockets
Replies
47
Views
2K
Tubelab_com
Tubelab_com
emk2
QB3/200, any experience with these?
Replies
4
Views
491
emk2
emk2
J
Has anyone tried this approach to a "safer" Loftin White?
Replies
2
Views
504
tomchr
tomchr
ygg-it
There are no references on the web, so what's wrong with this simple setup?
Replies
15
Views
1K
6A3sUMMER
6
Simonism
Easy Slow Start with Directly Heated Rectifier?
Replies
16
Views
2K
Simonism
Simonism
dubadub
Yet another low-budget EL84 Single-Ended amplifier design...
Replies
6
Views
2K
6A3sUMMER
6
emk2
Tamura F series
Replies
6
Views
1K
genome
G
A
DIY? Where to start? Advice wanted
Replies
19
Views
1K
vinylkid58
vinylkid58
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