• 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
C
does Tamura XE 45 8(kOhm) output transformer fit for a 300B Push Pull?
Replies
14
Views
883
cariatide
C
N
Cheap DAC or tube preamp?
Replies
8
Views
1K
Never Get Old
N
tonescout
Sources of NOS valves
Replies
14
Views
1K
tonescout
tonescout
tubelectron
The Micro-amp
Replies
49
Views
4K
tubelectron
tubelectron
S
Any schematic to connect 38R headphone from 8R OPT of type 45
Replies
10
Views
687
supernut
S
I
Confused by tube data (transformer impedance changing with voltage)
Replies
15
Views
813
isaacc7
I
SoaDMTGguy
Should I replace unknown-hour tubes from 2001 that came with an amp I bought?
Replies
10
Views
583
mdpaudio
M
A
Lumley M120 Monoblocks - Need Manual, schematic or anything !!!
Replies
9
Views
3K
andy-404
A
L
Millett Mighty Midget - blowing fuses
Replies
7
Views
465
lordearl
L
B
805A and 805
Replies
7
Views
1K
hafrse
H
SoaDMTGguy
Triode vs. Pentode in the same amp?
Replies
30
Views
4K
grovergardner
G
T
Linear Audio T-Reg'High Voltage?
Replies
1
Views
471
jan.didden
jan.didden
Algar_emi
CAT SL1 - My own version
Replies
15
Views
3K
Algar_emi
Algar_emi
C
Xduoo TA-10R tube amp makes a ticking noise when powered on (no sound)
Replies
9
Views
1K
huggygood
huggygood
tiefbassuebertr
VTL Pre-Amplifiers - Overview wanted for all older Models
Replies
4
Views
2K
tiefbassuebertr
tiefbassuebertr
D
Preamp Tubes matching in circuit
Replies
9
Views
1K
jhstewart9
jhstewart9
Joel
Model 91 schematic?
Replies
23
Views
17K
MartinV56
MartinV56
S
Unison Research S6 MkII - Schematic
Replies
0
Views
340
smm_sgp
S
8
Ming Da MC-3008-A2 Mono Blocks
Replies
48
Views
18K
danishaudiofool
D
S
300B schematic recommendations
Replies
112
Views
85K
stephe
stephe
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