@TeamHiFiMAN can you please publish a graph of this headphone?

The accuracy isn't really a "claim" but an objective fact. I showed the predicted preference rating score difference and this is derived from a mathematical formula.

The only good headphone in the world that needs more power than the Apple Dongle for adequate loudness is the DCA Stealth.

Why not use an Apple Dongle?

No Also, it's very important that the frequency response of the IEM is very close with the aftermarket tips or you're going to get worse sound quality. I personally recommend using the stock foam tips, but comply TX-100 and shure black olive small work as well.

Please name me an IEM at any price that is better than Etymotic ER2SE. I have been looking at getting something more expensive, but haven't found anything as good.

foam tips

Find me a headphone under ten-thousand dollars that measures better than Etymotic ER2SE in BOTH Frequency Response (stock) and Distortion. What do I mean by better? I want ruler flat bass to 20 Hz, ear canal gain around 2.7 kHz, THD < 0.1% full spectrum at 104 dB, ZERO peaks in the treble, and...

There's no need to sugarcoat it... Etymotic ER2 is the best IEM at ANY PRICE.

Get ER2SE for 49 dollars here https://www.adorama.com/etyer2se.html?emailprice=t

nope. planars that ring have rough frequency responses (almost all of them).

false. smooth FR = no ringing

Apple Dongle.

My ranking of Sennheiser headphones with EQ since they are all unusable for me without EQ: 1. OG HD800 2. HD560S 3. HD800S 4. HD650/HD600 (tie) 5. HD660S

These stage way better than HD650

I use the foam tips for 6+ hours a day with zero discomfort

Surgical Scalpel + 16-inch MacBook Pro

Getting the best performing gear makes your music sound the best it possibly can

? the headphone audibly distorts and I hate it

nvm I mixed up my calculations. ER2SE is more sensitive.

Has anyone side by side compared the distortion of ER4 and ER2 at 110+ dB? My ER2SE clips sooner in the bass at extremely loud volumes than ER4XR. Is this due to the 2 dB difference in max SPL?

How could it improve treble clarity and bass bunchiness? were you inserting the given tips incorrectly?

Etymotic ER4SR and ER2SE destroy HD650 at the same game