obobskivich
Headphoneus Supremus
okay cool. Thanks a lot! I remember my hfi 2400 needed an amp because the volume was extremely low. Will the pro 900 run into this problem?
The PRO900 is lower Z, but I think it's also lower sensitivity (they're 40 or 45ohms nominal and 96 dB/mW - like the PRO2900; the 2400 is like 70 ohms nominal but iirc they're like 100 dB/mW). So it's hard to say. Best advice would be to try it, and if it fails to get loud enough, then evaluate an amp.