Tonight I mostly be testing tubes; specifically Brimar 13D8 type tubes. These tubes are a superior replacement for the 12AU7 as they were engineered by Brimar in the early 1960s for precision matched plate currents. #Brimar #thermionicvalves #guitartone

How To Tighten Tube Sockets: www.youtube.com/watch?v=ZmOf... #electrontubes #thermionicvalves #vacuumtubes

How To Test Tubes With The 'TUBE IMP' Tube Tester www.youtube.com/watch?v=3-0a... #vacuumtubes #thermionicvalves #electrontubes

Before Instant-On: The Hidden Physics of Vacuum Tubes (Valves)

Check out my latest video: youtu.be/u_htxrYUIdw
#valves #vacuumtubes #thermionicvalves #vintagetech #vintagetechnology

#valves #vacuumtubes #vintagetech #vintagetechnology #electronicsnotes #electroniccomponents