graham95 said:

  Hey guys! I recently ordered an objective 2 amp for my Beyerdynamic DT770 (80 ohms) but also plan on getting a set of open headphones.  One of the headphones I'm interested in is the Philips Fidelio X1, which has an impedance of 30 ohms.  Would I be better off looking for headphones with a higher impedance to get more out of the amp I just got?  I initially planned on getting some that were in the 150 to 300 ohm range.  I'm just curious if I should look at higher impedances to get the most out of the amp, or if it will increase a low impedance headphone as well.  
 
Also on the topic of open headphones any suggestions? The Sennheiser 650s seem to be the king but I'm not sure if I'm willing to spend that much.  Any recommendations for something less expensive but close to the Sennheisers?  Open to anything.  
 
Thanks so much for the responses! Really appreciate it. 

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