• 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
revintage
DHT for the poor that can´t afford an OPT
Replies
26
Views
1K
revintage
revintage
S
Audio Research LS5 MkIII
Replies
19
Views
772
nauta
N
S
Is a 33GY7A actually a 6DQ6B type with a diode?
Replies
7
Views
290
vinylkid58
vinylkid58
dubadub
OTL Headphone Amp usage - Do's and Don'ts - Headwize 6N1P Headamp
Replies
0
Views
229
dubadub
dubadub
grahamfocal
Valvo EL80CC to swap for 12AX or AU7
Replies
6
Views
319
Flikoman
F
B
Wanted: Balanced MuStage Tube Headphone Amp schematic
Replies
1
Views
235
DrowningNotWaving
D
S
Audio League Report, Volumes 1 and 2 (1954)
Replies
4
Views
627
oldphaser
O
O
2A3-40 PP with choke input PSU sounds so powerful!
Replies
38
Views
3K
trobbins
trobbins
duanestorey
Tube transformers for sale
Replies
9
Views
515
duanestorey
duanestorey
Celsius
https://www.trioda.com/tools/triode.html is down?
Replies
3
Views
451
UniQ
UniQ
V
Here we go again with that fake Marantz preamp clone...
Replies
9
Views
589
ejp
E
andyjevans
Using 6P15P in triode at 300V - suggestions?
Replies
24
Views
2K
Francois G
Francois G
M
SET cuts out when switched off
Replies
19
Views
483
OldHector
OldHector
dommii
Tube distortion 'effect'
Replies
5
Views
379
dommii
dommii
M
Western Electric 375A tube experience?
Replies
2
Views
204
mctavish
M
SRMcGee
Can I Connect Two Transformers Together?
Replies
16
Views
1K
6sX7
6
P
Sennheiser VKS 203
Replies
2
Views
118
basreflex
B
AKlein
Varying Cathode Bias voltage question
Replies
46
Views
2K
AKlein
AKlein
M
Switching power supply blinking start-up for tube heaters
Replies
7
Views
243
jcalvarez
jcalvarez
M
Scrapbox 45 in 4 weeks!
Replies
24
Views
722
mctavish
M
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