[pradiptacr7]

Flat impedance iem - no change to quality
Uprising impedance with higher frequency - gets brighter and tighter
Resonant peak at bass - boomy frequented there


Why

Because see the impedance curve

Adding resistor may linearize resistance but it also increase voltage swing at higher impedance point, causing a boost..


For source

The amp will see Driver + resistor as 1 unit

Driver doesnt see backward


So its high resisted driver


Second


Having high impedance through resistor does 1 thing .

It generate heat and its quieter than the same equivalent of high impedance stock driver, as resistor change energy to heat.

But , when amp sees a load that big, the power drops and distortion drops significantly (opamp and power curve with clipping topic)

Plus , resistor emits out even more signal energy as heat

Which causes actual very low distortion to driver itself

So its worth it

But... Do check the impedance curve of iem

Thank you. Very much informative.


I have an AMP of the output impedance of 20 Ohms. But my IEMs are fairly ranging from 22 Ohms to 32 Ohms. In this scenario can an Impedance Adaptor make any difference? If yes then please guide which rating I should acquire.