• 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
J
Mixing types of parallel cathode bypass capacitors
Replies
7
Views
780
6A3sUMMER
6
SoaDMTGguy
Can someone help identify what circuit was removed in the MkII version of the ARC SP10 preamp?
Replies
2
Views
391
6L6
6L6
M1K35R
ECC82 hybrid headphone amp resistor question
Replies
13
Views
798
JoeAlders
J
J
Anyone had this problem?
Replies
13
Views
825
jwags81818
J
SoaDMTGguy
Is fixing microphonics as simple as replacing tubes?
Replies
6
Views
498
tubelectron
tubelectron
C
How to coonect the filament voltage elevator
Replies
9
Views
591
ckwong99
C
Wik
will it work?
Replies
6
Views
502
Mark Tillotson
M
H
Suggestions for first and last hifi amp schematic please
Replies
14
Views
1K
Horst2000
H
C
High power GU46 SE amplifier - help with certain issues
Replies
63
Views
16K
Palmas0
P
SoaDMTGguy
What is your opinion of Audio Research circuit designs?
Replies
1
Views
517
directdriver
directdriver
C
[For Sale] Elekit TU-8500 ($450)
Replies
2
Views
392
charles34
C
M
Willsenton R8 supplier request
Replies
11
Views
1K
CHenry
C
T
Capacity Multipliers made with Tube......
Replies
21
Views
2K
uptick
U
J
1625/807 UNSET PP review
Replies
12
Views
2K
tikiroo
tikiroo
L
Filament supply on a Luxman A3600 - should I add a virtual centre tap?
Replies
9
Views
702
luckiestmanalive
L
kodabmx
PCB for making 12V control voltage from 6.3V heater winding.
Replies
26
Views
3K
kodabmx
kodabmx
swingarm63
Eico 666 tube testing a 6a5g
Replies
3
Views
262
swingarm63
swingarm63
C
Question regarding wiring pentodes as triodes
Replies
17
Views
2K
Captn Dave
C
Bassling
Westinghouse WV(?)417A
Replies
4
Views
399
Bassling
Bassling
redride27
Anti parallel diode at ground
Replies
38
Views
3K
schiirrn
S
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