| 1 Watt Audio Amplifier | 66378 |
| 125W Power Amplifier, AB Class | 46896 |
| 200-220W Amplifier - 2N3055 | 121745 |
| Audio Amplifier 100W with BDX66B, BDX67B | 84592 |
| Audio Amplifier 200-500W | 170279 |
| Audio Amplifier 90-100W with 2N3773 | 208433 |
| Audio Amplifier with LM3875 | 51669 |
| Audio Line Driver | 9127 |
| Audio Power Amplifier 100W with LM3886 | 76877 |
| Headphones Amplifier | 25333 |
| Power amplifier with TDA2030 | 85744 |
| VU Meter 12 Leds (UAA180) | 13637 |
| VU Meter 9 Leds | 61184 |
