The 80 ohm version, from what Ive read, has more bass emphasis.

Thanks for the further replies. It really does seem that the Geek Out line are winners! I am now looking at the 80 ohm version of the DT770s and I'm leaning towards the cheaper GO450. Enough people out there are driving thier DT770-80s with their iPods/laptops so I figure the GO450 would be a...

Hey guys, I hope this is appropriate here. I've been reading up on these headphones and I am pretty set on them (I absolutely love my DT990s), but I just wanted to check that the portable DAC/amp I'm looking at (The Geek Out 450) would drive them. Given that they are 80 Ohm and a lot of people...

Thanks for the answers, that info gives me a good place to start. An alternative question; if I were to use the Geek Out 1000, what impedance headphones would I realistically be able to use? One review I've looked at said it paired up well with the HD700, so at least 150 Ohm? As you can tell I...

I keep an eye on this site whenever I'm in need of a new piece of audio gear (as you already know there is plenty of great info!), but this time I just don't quite have my head around portable DAC/amp combos. My current setup is the O2+ODAC with a pair of Beyerdynamic DT990s; I love this setup...