FastAndClean
Previously known as presata
i was listening to them today, i have around 150 hours of burn in, agree that they sound a little bit calmer and fuller (still bright though), the resolution is absolutely fantastic, i don't know if something can touch them there in the 200$ price point, they can pull out things that my other earphones cant, absolute detail freak, i purchased pure copper cable for them to see if i can improve them even more (now i have only silver plated cables), overall i am happy that i have something so different than my other (most of them warm sounding) earphonesI just did about a 50 hour burn-in and the highs got a lot less harsh. I agreed with your response elsewhere that the F3's would only work great on classical and vocals that don't have a lot of splashy highs. But now I after burn-in (someone else wrote that planar needs burn-in). I have been listening today for about 4 hours of all kinds of music electronic. I turned off the EQ which I had added with Roon DSP, which had helped to curb the discomfort of the heavy highs. But I don't need that EQ anymore. My Schiit Yggdrasil / Ragnorok combination is still my preferred sound.
The detail is so amazing. I think the sound stage/imaging make listening even rivaling my Focal Clears. But the bass is better defined on the Focals as is also a warmth to the overall sound. Remarkable however to me to be able to say that for an iem at the under $200 price level to rival my Focals.