| 1 Watt Audio Amplifier | 56901 |
| 125W Power Amplifier, AB Class | 21346 |
| 200-220W Amplifier - 2N3055 | 109924 |
| Audio Amplifier 100W with BDX66B, BDX67B | 73882 |
| Audio Amplifier 200-500W | 154467 |
| Audio Amplifier 90-100W with 2N3773 | 178631 |
| Audio Amplifier with LM3875 | 48876 |
| Audio Line Driver | 5745 |
| Audio Power Amplifier 100W with LM3886 | 69202 |
| Headphones Amplifier | 21948 |
| Power amplifier with TDA2030 | 77335 |
| VU Meter 12 Leds (UAA180) | 7849 |
| VU Meter 9 Leds | 53949 |
