• 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
M
Tiny Speaker on a Gilmore JR?
Replies
3
Views
437
rayma
rayma
PauliusT
300B line stage Mains transformer
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27
Views
2K
PauliusT
PauliusT
J
Schematic help
Replies
15
Views
831
chrisng
chrisng
bananasplit_00
Need help reducing THD in ECC88 Over/Under design
Replies
61
Views
4K
bananasplit_00
bananasplit_00
M
Schematic for 845 amp with 211 driver
Replies
20
Views
3K
45
4
L
dual power supply
Replies
91
Views
9K
astouffer
astouffer
B
How to wire up a 4:1 balum
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16
Views
1K
Grauwacke
G
Fuling
Grid stopper resistor placement
Replies
25
Views
2K
6A3sUMMER
6
S
Help with OT
Replies
13
Views
640
jcalvarez
jcalvarez
F
Help a beginner sort out his Heathkit SP2A PreAmp
Replies
6
Views
470
rayma
rayma
Fuling
Surplus toroid transformers as OPTs...with a little twist.
Replies
183
Views
14K
Fuling
Fuling
C
Guyatone GA1100D
Replies
11
Views
662
Kay Pirinha
Kay Pirinha
In The 21st Century
Rheem Califone As Guitar Amp
Replies
4
Views
808
In The 21st Century
In The 21st Century
B
Audio Innovation Series 500 power supply
Replies
4
Views
556
huggygood
huggygood
astouffer
5C8S and low capacitor value
Replies
23
Views
1K
6A3sUMMER
6
lineup
Listen to 6DJ8 Triode through Power Chip IC. Easy project.
Replies
19
Views
2K
adason
adason
P
Mullard 5/10
Replies
7
Views
933
OldHector
OldHector
S
Audio Note amplifier Mystery
Replies
8
Views
1K
sebbyp
S
Bigun
JJ EL509s in Triode - specs ?
Replies
9
Views
1K
6A3sUMMER
6
Ryssen
Does the EL519 and 6P45S have the same pinout?
Replies
5
Views
519
Ryssen
Ryssen
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