The Absolute Most Neutral TWS IEM Headphones
Oluv has created a custom tune for the $70 Earfun Free Pro 2 using a parametric EQ that’s stored onboard the headphones. He is famously known for his very neutral tunes for headphones and portable Bluetooth speakers including the top ranked Earfun Uboom L and Earfun Uboom X.
Due to the deep insertion of IEMs, there will be a resonance that is different for everyone that needs to be adjusted for in EQ that is based on the distance of the headphone to your eardrum as certain frequencies will resonate in that cavity and will need to be turned down. You can easily do a frequency sweep with the untuned IEM before you tune it to find this resonant frequency specific to you and apply the correct tuning.
If you aren’t interested in doing Oluv’s tuning, I’d recommend something else from Scarbir’s rankings below. The stock EQ on the Earfun Free Pro 2 is overly bass heavy which drowns out the midrange frequencies and will need tuning to sound their best.
His tuning is set directly on the earphones using the Android only app and only needs to be done once. After the EQ is set in the headphones you can use them on any device.
You’ll need to sign up for 1 month of his $11.50 a month Patreon to access the tuning EQ values.
Start guide on how to do it (requires $11.50 enthusiast level tier to access)
Oluv’s latest beta tuning for 6000hz ear resonance tuning (requires $3 entry level tier to access)
The latest tunings by ear canal resonance frequency for the Earfun Free Pro 2 (requires $11.50 enthusiast level tier to access)
For those who just want to buy IEM headphones and not mess with them
Scarbir has done an amazing job reviewing, describing and detailing over 300 Bluetooth IEMs. Here’s his best sounding list. Scarbir also has buying guides for every price level, with fantastic IEM choices at the $25, $50, $75, and $100 levels. The $75 level is especially great value.
Crinacle who has written one of the best high end headphone guides around has also reviewed many TWS IEMs among his general IEM list
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