• 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
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chapman 305 transformer wiring
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mq2402
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Vacuum Tube Audio PH-11
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planet10
planet10
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How good is good enough when designing a line stage?
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markusA
markusA
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Home-Made Plate Curves
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Ardee
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Comparison of Sovtek 5751 and RCA 5751
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artosalo
artosalo
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Is this an oscillation problem? -broskie CCA linestage
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wa2ise
wa2ise
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Longer life 6CA7's for class A
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costis_n
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cathode resistor sudden rising value on 7591
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chrish
chrish
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Wouldn't you just love to have these!. United Electronics 211's
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radiostar
radiostar
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Simple Octal SET help.
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forsakenrider
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RCA 7189 Black Plates
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Jim McShane
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Heater supply for the 866a
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heinrichs
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Best make of audio valves/tubes
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el156
el156
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What music/sound style for 845 tubes?
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ksporry
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what the best kit for Dynaco
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indianajo
indianajo
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6J4 Experiment!
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DualTriode
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How to calculate source impedance for audio transformer?
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ruffrecords
ruffrecords
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Capacitor Sanity Check
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Miles Prower
Miles Prower
Rundmaus
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Heater wiring - Coaxial?
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DF96
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Advice Needed
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payitforwardeddie
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