| 1 Watt Audio Amplifier | 64550 |
| 125W Power Amplifier, AB Class | 43008 |
| 200-220W Amplifier - 2N3055 | 119863 |
| Audio Amplifier 100W with BDX66B, BDX67B | 82570 |
| Audio Amplifier 200-500W | 167676 |
| Audio Amplifier 90-100W with 2N3773 | 203736 |
| Audio Amplifier with LM3875 | 51057 |
| Audio Line Driver | 8509 |
| Audio Power Amplifier 100W with LM3886 | 75673 |
| Headphones Amplifier | 24636 |
| Power amplifier with TDA2030 | 84023 |
| VU Meter 12 Leds (UAA180) | 12508 |
| VU Meter 9 Leds | 59927 |
