![]() ![]() Having too little damping ( factor ) can lead to distortion similar to not having enough spring in your shock absorbers on your car. This is basically how well the system can control the driver. You are going to have trouble delivering enough power to the headphone drivers. This is one of the reasons I stay away from high impedance headphones say 600 Ohms or more. The higher the impedance the less power is going to be drawn from the amp and delivered to the drivers. The power drawn from the amp and thus fed to the drivers is equal to the voltage squared over the resistance ( impedance ). This is typically a good thing.Ģ.) From Joule's Law we see that P = V^2 / R Your FiiO is going to try to give a constant voltage so as the impedance increases the less current will be drawn from the amp. Voltage is equal to current times resistance ( impedance ) They should sound the same, but the impedance is going to directly affect three things. Getting the lower impedance headphone is almost always better excluding headphones with impedances less than 30 Ohms. Going to 250 Ohm headphones is only going to lead to possible power issues for the driver. 5 Ohms so even with 80 Ohm headphones you are going to have a large damping factor. If it were me I would pick up the lower impedance headphone. Primary sources will be ipods, iphones, and mac laptops. However, I'd like something with particularly good bass for listening to electronic music. It may be relevant to note that I'll be listening to all types of music on these. ![]() I'd like to get either the DT 770 80 or 250 ohm some time soon. I'm wondering whether one might have similar complaints about the sound quality of the 80 ohm DT 770 in comparison with the 250 ohm DT 770. In his comparison of the Beyerdynamic DT 880 32 ohm and 250 ohm at, Tyll Hertsens complains about the sound quality of the 32 ohm version, in comparison with with the 250 ohm version. (And I've seen similar claims elsehwere.) I'm wondering if anyone can elaborate on this. The difference in amp drain isn't much, but it can add up over time.Ģ.5 ohm coil (resistance) 8 watts (power)Ģ.Assuming that both are powered by the same headphone amp (something like the FiiO E11 or Headroom Total Bithead, e.g.), are there noticeable differences in sound quality between the Beyerdynamic DT 770 80 ohm version and the 250 ohm version? PurpleAngel (1/30/12) says the 80 ohm version is a "little more bassy", while the 250 is a "little more balanced". Using lower voltage to fire a lower resistance coil, slightly more amps from the battery is consumed. ![]() Keeping the coil heat (8 watts) the same for both coils, the following can be demonstrated to show that despite using higher voltage to fire a higher resistance coil, slightly less amps from the battery is consumed. Using a low resistance coil at low voltage and then switching to a higher resistance coil at higher voltage, they should vape very similarly. The wattage and resistance values are fixed in the two examples below, the voltage and amperage drain will be the variables. In this discussion, we are seeking the amp draw of the battery using two different ohm coils (resistance) but using the same temperature (power in watts) to heat those coils. Wattage is the measurement of resulting heat of the coil. Ohm's Law for Dummies Amperage draw is what drains a battery, not volts. ![]()
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