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Originally Posted by MacedonianHero /img/forum/go_quote.gif
The 600s ohm cans are so efficient that they are pretty much the same to drive as the 250 ohm versions (and they sound quite a bit better too).
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The 'higher ohms = better phones' is just one more head fi myth and fallacy IMO (and there are plenty of 'em on here). Higher ohms are principally for use in recording studios, because they are connected to powerful amps that distribute a load to a number of phones.
And 'efficient' in ohm context doesn't mean easier to drive - it means the noise level per milliwatt is efficient. So, given power
adequate to their needs, they exhibit very little noise (even if this is inaudible to begin with). And if they're not given enough power, this efficiency rating is moot.
Any look at Beyer's web site will see they market and discuss their higher end 250ohm phones as studio based gear. But they're hardly going to knock any consumer perception that 600ohm phones are better. Hence the only statement they make for the 600 is it's targeted at hi fi enthusiasts and studios, (yet only available via the customisable site, and what studio wants to order colour customised phones and pay extra for that?) no mention of increased performance - the market makes that leap of faith, and makes it fact via opinion.
More resistance just means harder to drive, needing more power for required performance. So higher ohm phones should be properly amped. Period. But people being what they are, bigger numbers = 'better' performance.
Just like a guy who buys a V8 over a V6, but never actually gets to use it's grunt, and therefore not really notice any real-world difference in performance. But I guess it gets noticed at the car club...