| Manufacturer | Part Number | Description |
|---|---|---|
| ETC Unknown Manufacturer | 6L6GC | Pentode |
Tube Amp Doctor |
6L6GC-STR | High Performance Audio Beam Power Pentode |
| Shuguang Shuguang | 6L6GCR | Beam Tetrode |
Svetlana |
SV6L6GC | High Performance Audio Beam Power Tetrode |