Digital-Pride
Headphoneus Supremus
- Joined
- Nov 2, 2010
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Quote:
so what exactly dose impedance mean and whats better high or low. and I'm now eather going to buy the 2200 or the 2400 is the difference of 5 noticeable?
Nominal impedance(which is measured in ohms) is a measure of electrical resistance, meaning the higher the impedance rating the more current is needed just to overcome the electrical resistance of the item or in this case headphones. This is why higher impedance headphones like Beyerdynamic's DT 880 600 Ohms for example, are much harder to drive then a pair of 16 Ohm Apple ear buds. Very little current(in comparison to the DT880) is needed to overcome the electrical resistance of the Apple ear buds, which why an ipod can get much louder with these than the DT 880. With the limited output of portable devices like the ipod, an external amplifier is needed to help produce the current to properly power hard to drive headphones. Just keep in mind that while nominal impedance is a good indication of how difficult or easy a headphone will be to drive, it's not the only factor as there are low impedance headphones(take Denon's D7000 rated at 24 Ohms) that are a bit harder to properly drive without an external amplifier, then things like size of the driver, sesitivity, voice coil mass, etc. factor in as well.
I would think that there's most likely not really much of a difference, terms of drivability, between the HFi-2200 and the HFi-2400. You'll most likely need an amp for both regardless.