Do headphones requiere break-in?


Hi all! I just got a set of Grados SR60i headphones following some very good reviews about them, but I not happy with their sound: dark sound, rolled-off highs, bass wimpy, but the mids are ok. Do they need some break-in time to sound at their best? If so about how much time? Thanks!
tiofelon
Yes, same for Sennheisers. Huge difference as they open up, especially highs.

Neal
What Nglazer said. I almost sent back my Sennheiser 650's because they sounded horrible when brand new. Like your Grado's, no bass or highs. Then they just opened up and sound glorious with hours on them.
Give them some time, they'll come around.