Is a higher impedance better relative to the particular amp supplying audio information to the headphone? The X impedance is 22 ohms and that means an easier to drive phone. If the impedance on the new driver/fazor LCD3 is 150 ohms, then that should mean it is relatively harder to drive. So how is having the higher impedance better?
I think LCD-3F is 110ohm impedance
Some tube amps (OTLs) have an easier time driving a higher impedance load. Efficiency is the measure that reflects difficulty to drive in terms of total power needed for a volume. For a given efficiency, lower impedance means current draw will be more volume relative to voltage swing. With small source devices (especially battery powered) the total voltage swing is often limited, so a lower impedance can will allow more total power delivery because more total power is delivered as current rather than voltage. Tubes, on the other hand, are very good at delivering high voltage but not as good as delivering high current, so they like a higher impedance load.