| Answer | Crossword Clue |
|---|---|
| PREAMP | Sound signal booster |
| AMP | Signal booster |
| PREAMP | Signal booster |
| PREAMP | Radio signal booster |
| PREAMP | Stereo system signal booster |
| AMP | Sound booster |
| MEGAPHONE | Sound booster |
| AMP | Sound booster, briefly |
| AMP | Band's sound booster |
| MEGAPHONE | Cheerleader's sound booster |
| AMP | Sound booster at a concert |
