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Showing 1 of 306 conversations about:
sixelannif
218
Nov 30, 2017
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"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.
sixelannif
218
Nov 30, 2017
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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.
jkim-enthusiast
1
Dec 26, 2017
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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.
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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