FiiO FW5

I've been using them for two years. Initially, they came with the new (at the time) FiiO brand earpads, and with those, the sound was at its worst: almost no bass, the midrange was lacking, and the upper mids were absurdly high, making female vocals and high-frequency instruments sharp and grating. But there are also "Balanced" earpads included. With those, the headphones sounded as they should. I listened for a long time on the standard profile with aptX + LDAC codecs, but then I decided to experiment: I played around with the equalizer, adjusted the sound to the Etymotic target curve (not by ear, but according to FiiO's official data in .csv format from their website) — and got a real powerhouse. The detail is just out of this world, the bass is finally truly neutral and controlled, and the technicality is top-notch. Although the stock sound isn't bad at all, personally, the Harman target doesn't appeal to me. Overall, I highly recommend them. If you plan to listen without an equalizer, it's better to buy TRI Clarion earpads right away — with those, everything sounds much more pleasant "out of the box."