Willsenton R8: Power Supply Mod and Upgrade
25:56
Willsenton R8: Final Power Supply Mods.
26:47
Willsenton R8: Fixing Lead Dress and Grounding Faults #2.
21:35
Willsenton R8: Replacing the Front End Components
28:23
Willsenton R8: Must do Modification to Bias Boards!
4:04
Juson JTA100 and Dayton HTA200 EL34 tube upgrade
46:21
The 5 kilowatt Crown
50:50
Manutenção de um amplificador de campo magnético Carver M1.5t
22:19