Snowy news (Patreon)

All final tunings for the Earfun Free Pro should be finished by tomorrow, thanks for your pacience. I think I managed to fine tune my target even more in order to make the response even more neutral. There will be tunings for the following values available: 

5400Hz
5600Hz
5800Hz
6000Hz
6200Hz
6400Hz
6800Hz
7000Hz

For me 6200Hz sounds best, 6000Hz and 6400Hz are still acceptable, all other values are starting to sound too off (having a neutral reference in mind, because the human brain will adopt to any response after some time anyhow).

This is how all values measure at their respective resonance frequencies (compensated for my target thus flat line = flat response assumed that my target is really neutral):

This on the other hand is a single tuning but measured with different resonance frequencies which shows why a particular tuning won't sound acceptable to someone with shorter or longer ear canals, as various peaks are starting to appear and shift, therefore I hope that my idea of offering own tunings for different resonances will work out:

Here some further random IEMs measured I had at hand (green modded Sony MH1, blue Sony MH750, red Moondrop Starfield) simulating my own resonance frequency compensated for my target. You can see the same kind of peaks appearing, thus some IEMs may sound OK for particular ears by coincidence, but I am pretty sure that most IEMs on the market are just tuned towards wrong targets not even taking the individual ear canal resonances into account, thus no surprise that IEM tunings seem to offer pretty random responses just like most headphones. You either accept the given sound signature, as your brain will get used to it after a while, or you try to make it better by checking back with some neutral references:

Keep in mind you are the only ones who are supporting what I am doing and my goal became to offer you the best possible sound for as little money as possible. But I can not do this for living with my current supporters. I would need way more supporters that would allow me to invest even more resources and finally releasing an own product on the market not being dependent on anyone else.