6LX6 Lindal Beam Power Amplifier Tube. Substitute for the 6LF6. New old stock * Not for export. MFR: Lindal. SKU: 6LX6-LIN. Picture for reference only.
Sweep tubes, 6lf6, 8950 30 watt and 6lw6, 8908, and M2057 40 watt tubes compared. - YouTube
6LX6 RCA Beam Power Amplifier Tube. Substitute for the 6LF6. New old stock * Not for export. MFR: RCA. SKU: 6LX6-RCA. Picture for reference only.
List of vacuum tubes - Wikipedia
Lot of 6 Vintage 6LF6 / 6MH6 Vacuum Tubes Sylvania, Sears, GE, Westinghouse, RCA Must See | Reverb
Lot of 6 Vintage 6LF6 / 6MH6 Vacuum Tubes Sylvania, Sears, GE, Westinghouse, RCA Must See | Reverb
Brief of Vacuum Tube Models and Replacement – IWISTAO HIFI MINIMART
Sweep tubes, 6lf6, 8950 30 watt and 6lw6, 8908, and M2057 40 watt tubes compared. - YouTube
6LX6 Zenith Beam Power Amplifier Tube. Substitute for the 6LF6. New old stock * Not for export. MFR: Zenith. SKU: 6LX6-ZEN. Picture for reference only.