RF noise filtering
RF Blocker — connected-fidelity
SATRI Circuit Laboratory FIL-3102 Digital Noise Reduction RF Filter – ExAUDIO
Build an Amp
Tracking back 100Hz hum in a tube guitar amp
Safety
Capacitor - Wikipedia
Making a Capacitor Discharge Tool // Discharge Capacitors in a Tube Amplifier // Tube Amp Safety - YouTube
The Valve Wizard
Boyuu hifi Equis A10 EL34B+6N2 SE Tube Amplifier with 5Z4P rectifier: review and mod | diyAudio
Increasing Filter cap values
What Do Filter Caps Do? — Tropical Fish
Amp hum/buzz - bad caps? PICS added | The Gear Page
Common Tube Amp Malfunctions: My amp doesn't turn on. — Tropical Fish
Valve RF amplifier - Wikipedia
Using Capacitors to Filter Electrical Noise | Arrow.com
The sound of bad filter caps - hum and ghost notes. - YouTube
The Cool Sound of Tubes - IEEE Spectrum
Case studies: Eliminating RF interference
Peavey VB-2 Why is my Tube Amp Humming/Buzzing? - Replace the Power Supply Filter Capacitors! - YouTube
Troubleshooting
