| 1 Watt Audio Amplifier | 51685 |
| 125W Power Amplifier, AB Class | 10 |
| 200-220W Amplifier - 2N3055 | 97968 |
| Audio Amplifier 100W with BDX66B, BDX67B | 69221 |
| Audio Amplifier 200-500W | 138774 |
| Audio Amplifier 90-100W with 2N3773 | 154132 |
| Audio Amplifier with LM3875 | 47014 |
| Audio Line Driver | 3394 |
| Audio Power Amplifier 100W with LM3886 | 65371 |
| Headphones Amplifier | 19807 |
| Power amplifier with TDA2030 | 71519 |
| VU Meter 12 Leds (UAA180) | 4687 |
| VU Meter 9 Leds | 50160 |
