LOUDHAILER

Volume booster — he'll air duo (anag) (4,6)

Solution has appeared in 2 crosswords (2 across and 0 down):

• Quick crossword No 15,890 — 2021-04-11 23:00:48
  23A: Megaphone (10)
• Quick crossword No 15,654 — 2020-07-08 23:00:45
  17A: Volume booster — he'll air duo (anag) (4,6)