[Shizdan]

On cnet is says that
HD 580 sensitivity is 97.0 dB and HD 595 is 104 but I thought the HD 595 was easier to drive?

 

[bernado]

To be honest, I wouldn't look to cnet for definitive technical information. HD595s are by far easier to drive. Whatever paper specs cnet quote don't stand up in practical application.

 

[RallyMaster]

Since you're comparing the HD580 and the HD595 120 ohm, the HD595 is definitely easier to drive. However, the HD595 50 ohm (recent version) is even more efficient.