• 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
H
Unison Research Triode 25
Replies
5
Views
562
HaRad
H
C
Help me ID this interesting ECC83
Replies
4
Views
278
Kay Pirinha
Kay Pirinha
Tubelab_com
Of course it will work, it's guaranteed!
Replies
37
Views
3K
Wavebourn
Wavebourn
L
Triode - pentode switch conversion for Citation II amp
Replies
7
Views
505
Lmitchell
L
M
Mystery Philips ECC81 tube code
Replies
2
Views
292
rockies914
R
M
Stabiline Voltage Regulator Vintage Tube
Replies
10
Views
480
EC8010
EC8010
tiefbassuebertr
Michaelson & Austin's TVA-10 vs. Papworth's TVA10 (Burgundy Range) - Schematic Differences ?
Replies
6
Views
2K
tiefbassuebertr
tiefbassuebertr
L
Need help for bias adjusting for hybrid amplifier KORA ARIES
Replies
15
Views
433
Lynyrd
L
revintage
Max Ua on 6B4G
Replies
28
Views
951
Adolf Corkscrew
A
V
46 driving a 300B
Replies
23
Views
2K
vcoustics
V
Jaytor
Mains filter capacitors
Replies
6
Views
584
Merlinb
Merlinb
revintage
Unknown transformer
Replies
6
Views
314
mctavish
M
P
What is the "Schade"
Replies
43
Views
3K
6A3sUMMER
6
S
AMC CVT grid resistor burned out!?
Replies
2
Views
145
dubadub
dubadub
RonBurns
A 'Bit Off More Than I can Chew' build log of Pete Millett's Engineer's amp
Replies
14
Views
688
vinylkid58
vinylkid58
F
Graaf GM20 6C33
Replies
13
Views
5K
as_audio
A
noisyneighbour
Cathode bypass cap question, power or preamp?
Replies
5
Views
289
Michael C
M
D
Refurbishing a 1960’s Nordmende Casino Console
Replies
10
Views
547
DuRWooDJBL
D
R
Cathode bypass cap question
Replies
20
Views
511
AllenB
AllenB
edwardjurich
Gavitt Shielded Wire
Replies
10
Views
498
edwardjurich
edwardjurich
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