• 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
L
simple method for changing plate/cathode resistors on PCB
Replies
51
Views
2K
6A3sUMMER
6
C
Tube Amp+MiniDSP+OpenBaffle
Replies
11
Views
563
mdpaudio
M
B
5C4M / 5Ц4М vs 5AR4 / GZ34
Replies
1
Views
575
JonSnell Electronic
JonSnell Electronic
Windcrest77
Newby question: Why are classic negative bias supplies so poorly filtered?
Replies
29
Views
2K
rayma
rayma
G
Uneven Filament Wear of DC heated DHT’s, Truth or Myth
Replies
95
Views
5K
jhstewart9
jhstewart9
OldHector
Pioneer SM-R150
Replies
24
Views
3K
Tube Radio
T
emartine
Merlin phono preamp + extra gain stage
Replies
43
Views
4K
snapper
S
C
CR Developments Romulus
Replies
3
Views
534
CharlesArm
C
M
Software for OT calculation
Replies
7
Views
711
50AE
50AE
T
UPGRADE Cathode Follower and other mod - Music Angel Marantz 7 Clone
Replies
27
Views
2K
Lingwendil
Lingwendil
T
Schematic wanted for push-pull triode connected pentode amp with DHT front end
Replies
162
Views
13K
swak
S
J
Custom preamp with 417A / 5842 phono stage
Replies
1
Views
743
OldHector
OldHector
J
Which diy valve amp without valve sound?
Replies
20
Views
1K
grovergardner
G
tiefbassuebertr
Extending Life Expectancy of Power Amp Tubes like EL34 by which kind of Switch-On Variants - which one is most useful ?
Replies
31
Views
3K
Mark Tillotson
M
C
Triode conected grid resistors question
Replies
19
Views
1K
jhstewart9
jhstewart9
S
Push-pull amplifier in AB operation for EL34, 6CA7, KT77, G/FU/LS50, E/FL152, SRS552 e.g.
Replies
0
Views
451
snapper
S
P
EAR 834 clone picking up 93.7 FM radio station
Replies
43
Views
3K
Chris Hornbeck
Chris Hornbeck
J
Capacitance in Choke Input PS?
Replies
18
Views
2K
claudiomas
claudiomas
claudiomas
question for audio transformer experienced or expert
Replies
21
Views
1K
claudiomas
claudiomas
stephe
Biasing SE KT120 tubes
Replies
15
Views
2K
Fuling
Fuling
You must log in or register to post here.
Top Bottom