• 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
Rme9632
I am loosing my mind here please help
Replies
24
Views
1K
Wavebourn
Wavebourn
FrankieS
beginner's thought: ECC83, ECC82, push pull EL34
Replies
48
Views
2K
Kay Pirinha
Kay Pirinha
P
Direct coupled SE amplifier 6S4S+E810F
Replies
17
Views
1K
popa marius
P
M
Some schematic of 300b SET with anode loaded CCS?
Replies
10
Views
816
elac310
elac310
Rme9632
Bypass cathode capacitor or b+ capacitor
Replies
8
Views
355
dariusbv
D
N
RH84 build & quite a few questions...
Replies
44
Views
9K
zintolo
Z
Dorin Bodea
Iron Schmitt phase inverter - lowest THD seen
Replies
96
Views
6K
Dorin Bodea
Dorin Bodea
V
V4lve lover's free Gerbers thread
Replies
192
Views
47K
v4lve lover
V
goldenbeer
Power supply mosfet vs choke filter
Replies
25
Views
16K
jean-paul
jean-paul
tomekkk1
My mods of Audio Institute VR-70E
Replies
40
Views
16K
jkojic
jkojic
M
Toroidal transformers for tube amplifiers
Replies
37
Views
2K
brianqq
B
Fuling
No iron deficiency here
Replies
11
Views
505
Fuling
Fuling
Rme9632
Question about my 12AU7 12AT7 preamp
Replies
9
Views
314
Rme9632
Rme9632
S
Curiosity: Tubes for nothing?
Replies
7
Views
222
vinylkid58
vinylkid58
N
Japanese 2A3 schematic opinion wanted
Replies
13
Views
576
Bandersnatch
B
T
Need Help in troubleshooting Fluke 407D Tube power supply
Replies
13
Views
382
tanker135
T
Rme9632
delay on the B+ or not
Replies
10
Views
485
Wavebourn
Wavebourn
M
6SL7/6BL7 driven Electra-Print 300B
Replies
38
Views
2K
nicoch58
nicoch58
lcsaszar
E83F or E180F for input stage?
Replies
15
Views
4K
Magz
Magz
J
My Croft series 5 schematic
Replies
27
Views
802
Alex M
A
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