| for great-quality playback | 4 | purpose |
| headphone → require → amplifier | 5 |
| headphone → have → amplifier | 4 |
| headphone → need → amplifier | 3 |
| negative | neutral | positive |
| 0.172 | 0.577 | 0.252 |
| Raw frequency | 12 |
| Normalized frequency | 0.239 |
| Modifier score | 0.767 |
| Perplexity | 184.505 |