pradiptacr7
500+ Head-Fier
Thank you. Very much informative.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
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.