Darkrai10 ohm output impedance for the amp.
Gain is very high though, measured 20db.
The amp is not intended for sensitive headphones/IEM , but rather for medium impedance, medium sensitivity/efficiency headphones.
Let me know if you need more info, I got one right here.
LQDForceSo given the choice of the 80 or 250 ohm DT 770 would recommend the 80 ohm?
I guess it comes down to the fact it's a USB powered amp, so it's not got the power available to drive higher impedance optimally?
I'm new to audiophilia, so I'm just checking I understand things correctly.
neuneuThe D1 will power both of them just fine.
If you want to understand output impedance and impedance in general, read NwAvGuy's excellent article here:
http://nwavguy.blogspot.co.il/2011/02/headphone-amp-impedance.html
Anyway,
The 80 Ohm DT770 is the better option in my opinion, not only because of it matching the D1 , but because it sounds a bit different than the 250 Ohm model. More bassy, punchy and a tiny bit darker/less bright.
neuneu@neuneu I use one of these with the DT770/80 and it sounds great! This should be sufficient to drive either the 80 or the 250 ohm. I auditioned both the 80 and 250 with the D1 and greatly preferred the bassier sound of the 80.