| 1 Watt Audio Amplifier | 56500 |
| 125W Power Amplifier, AB Class | 19741 |
| 200-220W Amplifier - 2N3055 | 109251 |
| Audio Amplifier 100W with BDX66B, BDX67B | 73410 |
| Audio Amplifier 200-500W | 153374 |
| Audio Amplifier 90-100W with 2N3773 | 176714 |
| Audio Amplifier with LM3875 | 48714 |
| Audio Line Driver | 5505 |
| Audio Power Amplifier 100W with LM3886 | 68887 |
| Headphones Amplifier | 21785 |
| Power amplifier with TDA2030 | 76926 |
| VU Meter 12 Leds (UAA180) | 7568 |
| VU Meter 9 Leds | 53517 |
