| Type of transformer | speaker |
| Symbol | Power | Bandwidth | Primary winding imp. | Sec. winding imped. |
|---|---|---|---|---|
| [VA] | [kHz] | [kΩ] | [Ω] | |
| TGL5/001 | 5 | 0.04...20 | 5.2 | 8 |
| TGL5/002 | 5 | 0.04...20 | 5.2 | 4 |
| TGL20/001 | 20 | 0.05...12 | 3.2 | 8 |
| TGL20/002 | 20 | 0.03...15 | 10 | 8 |
| TGL35/001 | 35 | 0.035...20 | 1.73 | 4 |
| TGL35/002 | 35 | 0.035...20 | 1.73 | 8 |
| TGL35/003 | 35 | 0.02...20 | 0.85 | 4 |
| TGL40/001 | 40 | 0.04...16 | 4 | 8 |
| TGL60/002 | 60 | 0.04...15 | 2.2 | 8 |
| TGL60/003 | 60 | 0.04...15 | 2.2 | 4 |
| TGL100/001 | 100 | 0.04...15 | 1.3 | 8 |
| TGL20/004 | 20 | - | 3.5 | 8 |