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sixelannif
218
Nov 30, 2017
"this headphone’s 60-ohm impedance allows it to be easily driven by most portable devices", uh... i don't know if this is actually easy to drive or not as ohm values can be deceiving in some cases (looking at you 50-ohm t50rp), but I would definitely not quote that 60-ohm spec as meaning it's easy to drive.
Scott
159
Nov 30, 2017
sixelannifWork fine off my iphone.
BlueCrowned
5305
Nov 30, 2017
sixelannifShould be fine dude, they're Koss.
sixelannif
218
Nov 30, 2017
BlueCrownedDon't get me wrong, i'm not saying you can't drive them just fine from a phone, I'm just saying that when looking at headphone specs, when you see 60-ohms you don't immediately think 'oh those are going to be real easy to drive', so I though that was a strange spec to quote to show that they're easily driven by a phone. If anything sensitivity would be more relevant.
BlueCrowned
5305
Nov 30, 2017
sixelannifI don't know anything about headphones.
jkim-enthusiast
1
Dec 26, 2017
sixelannifYou're right. "Easy to drive" is not just about impedance. Here is the big picture.
It is about impedance AND efficiency. Looking at only one indicator can be misleading. Low-efficiency headphones will be difficult to drive (i.e., more work by amp) regardless of their impedance level. But even if headphones are efficient, low-impedance phones can be difficult to handle due to finicky volume control, and high-impedance phones can be difficult to drive due to high voltage requirement.
Most Koss headphones are easy to drive because their impedance sits at a moderate level (50 ohms) and efficiency is high.
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