which 770pro? the 80ohm or 250ohm?
i have the 770 250ohm ones and with an amp they sound awesome. they have good bass but i find that if i listen to the song on my living room speaker setup, my 12 inch sub produces more bass than the beyer's can do naturally. so i wouldn't call it overpowering on the beyers lol. i can hear things in songs too i hadn't heard before so i would not call the bass overpowering either.
i've only tried the 770 250ohm ones so i can't comment on the others but i do know i went for the one i did because i use them mainly on plain flights to drown out the noise. i also got the gel pads for them. i recently watched a movie using the beyers and i was totally immersed in the movie despite it only being on my 12 inch laptop screen
. the isolation is not as good as 25dB earmuffs i have for the range but its still far superior with the gel pads versus the stock velour pads.
if you get the 250ohm ones of the 990's the following is a good amp for them. i use it to drive my 250ohm DT770's with no issues, and over 100 hours of battery life. i use 2 aa rechargables
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one more thing on the comments about the treble with the 990: i know with my 770's i've fallen asleep on my back a few times listening to music. they are that comfortable and the sound does not fatigue at all. sometimes too much treble is not a good thing at least not for me
either way any set of beyers, you can't really go wrong
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here is the link for the amp: $60 is not bad at all!
http://www.electric-avenues.com/audio8.html
one last thing about the comments on the 990's: i've fallen asleep several times on my back listening to music with the 770 beyers. the sound is not fatiguing and they are just that comfortable. sometimes too much treble is not a good thing, at least not for me
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