Clip has weak output and that’s a fact.
If someone get Clip and finds that the music doesn’t play loud enough the answer like ‘‘buy new 70$ headhones’’ or ‘‘get yourself headphone amplifier’’ is just not fair advice.
Clip sounds OK but nothing to write home about. I would go to the store and exchange the Clip for some other player with higher output. For sure I would not buy amplifier or new headphones just because the Clip has weak output.