• 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
K
Rectifier Diode Replacement
Replies
18
Views
934
6A3sUMMER
6
N
Separated power supply PCB or same PCB with amplifier stage
Replies
11
Views
544
Windcrest77
Windcrest77
U
Yaqin SD-CD3 Tube Buffer
Replies
3
Views
316
jcalvarez
jcalvarez
stephe
Acrosound TO-310 Schematic Bypass Cap Values?
Replies
10
Views
482
6A3sUMMER
6
M
Eurotrip/parts search
Replies
7
Views
370
grataku
G
T
Matching tubes by Operating Temperature
Replies
132
Views
5K
kevinkr
kevinkr
M
Finding Low impedance side of a coupling capacitor on a PCB?
Replies
21
Views
1K
EC8010
EC8010
PretentiousFood
6BY5 Ratting, Choke Input Supply
Replies
21
Views
613
PretentiousFood
PretentiousFood
B
OTTO-1 Tube Tester / Matching System
Replies
1
Views
197
Mooly
Mooly
H
Phono stage Neumann WV2 - question on gain ...
Replies
10
Views
623
euro21
E
C
Heater wiring problem
Replies
18
Views
727
catalin gramada
C
T
Best 12AX7
Replies
102
Views
6K
Kay Pirinha
Kay Pirinha
R
ETF 2010 Frank Blöhbaum presented a lecture about his newly designed tube-based crossover.
Replies
0
Views
270
resets
R
R
Why no transformer splitter stages for push/pull?
Replies
37
Views
2K
fossa
F
C
Considering amp design using 3D21WB
Replies
2
Views
252
Cornwallav8r
C
PauliusT
OPT for 1.5 ohm driver
Replies
20
Views
698
Bluesystems
B
M
Cheap 12AX7 Preamp add Pot?
Replies
5
Views
295
Mike One
M
N
Fixed bias has changed after volume position is middle
Replies
26
Views
904
flex2
F
C
Help with Glassware Audio PS-21
Replies
3
Views
268
crooner2264
C
T
01A Question
Replies
61
Views
2K
toshiba_nz
T
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