• 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
A
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Cheap el84 se
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3
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1K
Geek
Geek
aletheian
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Bridge rectifier with capacitors???
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2
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1K
aletheian
aletheian
C
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power supply recommendation for EL84 amp
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5
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3K
chevelle
C
dsavitsk
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DHT Ultrapath Linestage schematic help
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6
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3K
billr
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A
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replace 5y3
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5
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3K
kevinkr
kevinkr
aletheian
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Who manufactured are these EL34's?
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5
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2K
fdegrove
fdegrove
D
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partial feedback stuff
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3
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2K
Bandersnatch
B
Joel
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Miller compensation - pros/cons?
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25
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7K
Johan Potgieter
J
W
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using 40 VDC supply?
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5
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2K
SemperFi
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S
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OT: Tribute to Kondo-San
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2
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3K
qwad
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D
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81 Rectifier
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4
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3K
jlsem
jlsem
Cassiel
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Choke current
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35
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5K
Tweeker
T
W
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Any thoughts on this Philly Audio preamp design.
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8
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6K
arnoldc
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diegot
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What do you think about this tube preamp?
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11
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2K
diegot
diegot
dsavitsk
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6CA4/EZ81 heater bias
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5
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4K
anatech
anatech
M
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My 2A3 schematic, comments please.
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15
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3K
jane
jane
dsavitsk
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proper choke placement
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6
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2K
anatech
anatech
M
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First stab with PSD for 6CK4 amp-what have I got here?
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2
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1K
SY
SY
bst
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6HE5 as output pentode?
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4
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4K
ilimzn
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C
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Need Help. Anyone with Philips AG 9016??
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6
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10K
Svein_B
S
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