• 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
andyjevans
Line stage using 6V6, 6W6, 6G6, 6F6 etc. in triode?
Replies
3
Views
736
stevenrotterdam
S
B
Luxman MB3045 biasing guide/help
Replies
4
Views
524
jan.didden
jan.didden
D
Secondary light emanating through the top support in 6HB5?
Replies
16
Views
716
vinylkid58
vinylkid58
L
Re-purposing two half-used 12AX7 to add in a pre-amp on my KT88 Tube amp
Replies
3
Views
394
6A3sUMMER
6
TheFinisher
Are these of any use for audio?
Replies
11
Views
713
OldHector
OldHector
SoaDMTGguy
Feasibility of getting 15W out of a SET tube design?
Replies
109
Views
7K
6A3sUMMER
6
PKI
Not exactly DIY: help packing tube amp
Replies
25
Views
1K
tomchr
tomchr
I
A2134 vs N78 tube
Replies
10
Views
931
bondini
bondini
K
thought experiment: 6S19P / 6C19∏ series string filaments
Replies
30
Views
3K
TonyTecson
TonyTecson
C
Help understanding skunkie designs ... the color pre amp mod
Replies
4
Views
600
Mooly
Mooly
bondini
Single ended pentode with plate-to-cathode feedback
Replies
94
Views
8K
Mosquito
Mosquito
V
RS337
Replies
7
Views
531
vega65
V
R
Heater series string 16X preamp tubes
Replies
4
Views
312
Tom Bavis
Tom Bavis
east electronics
McIntosh 275
Replies
4
Views
474
east electronics
east electronics
sajadho1988
Tube amp transformer calculator spreadsheet
Replies
18
Views
3K
sajadho1988
sajadho1988
sajadho1988
Measuring magnetic permeability of an unknown transformer core material
Replies
34
Views
3K
Zoran
Z
S
Michelson & Austin TVA-1 how to Change Output transformer from 8 to 4ohm
Replies
32
Views
917
tikiroo
tikiroo
N
inductor filter 5 henry
Replies
47
Views
2K
niamex
N
M
DC on line stage inputs
Replies
18
Views
816
MrKettle
M
D
How would heater-cathode leakage in AC-heated power tubes manifest itself?
Replies
7
Views
489
dch53
D
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