I've heard beyer 880's, 990's, and 770's. I really wasn't impressed
with any of them. For that price, my advice would be to go with a pair
of grados.

beeyp jars wrote:

I was about to purchase the Beyerdynamic DT990 PRO
(http://www.veronica.co.uk/dt990.htm).

But noticed its impedance is 250 ohms and my sound card's manual
(Creative Live 5.1 Digital) says 32ohm for the OUT socket.

Q: Will it sound very bad with a low volume and hence definitely require
a headphone-amp?