• 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
I
Source for Svetlana SV572-10 or SV811-10 Tubes?
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3
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713
gillougillou
G
N
Battery powering 12AX7
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53
Views
3K
nbtone
N
roger57
Using (or NOT) both sides of a multi section Cap
Replies
12
Views
440
roger57
roger57
T
Microcontrollers in tube amplifiers
Replies
58
Views
5K
egellings
E
95Honda
Conar 221 Tube Tester
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4
Views
582
tubelectron
tubelectron
W
Output transformer problem - SE TH100 - James Audio Transformer
Replies
40
Views
2K
woodnes
W
S
Source follower voltage -55Vdc for 6E6P
Replies
9
Views
578
supernut
S
andyjevans
300B SE with a DHT driver
Replies
490
Views
101K
rchamber
R
stenak
I need help to find a schematic for a diy hybrid tube preamp from the eighties
Replies
3
Views
378
rayma
rayma
stephe
Finished KT120 Mono Set
Replies
4
Views
609
stephe
stephe
kevinkr
K&K Audio is Closing
Replies
36
Views
6K
caryking
C
K
Help sizing transformer
Replies
16
Views
730
wg_ski
W
invaderzim
8K 10W PP output transformer- what to build?
Replies
70
Views
10K
framilopes
F
M
Once again, PIO caps in tube PSU (SET)
Replies
19
Views
1K
sser2
S
Bryguy
Does anyone recognize this DIY amp?
Replies
12
Views
680
wrenchone
wrenchone
H
What happens to a GM70 when the cathode connection gets interrupted.
Replies
3
Views
397
euro21
E
swingarm63
Is this drawing correct?
Replies
30
Views
996
egellings
E
H
Maximum allowable grid current for GM70 with cathode below grid voltage.
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2
Views
244
Hans Polak
H
C
Shengyi Audio
Replies
0
Views
259
Cookieboy
C
N
Thorens AZ 25
Replies
4
Views
359
huggygood
huggygood
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