NOCS NS500A-001 Aluminium In-Ear Headphones (Electronics)
So I've collected some experiences with IEM s. Currently I have a Xiaomi Piston 2 and a Klipsch S4a on board. The source FiiO E09KQGIR headphone amplifier + E17 as DAC, with FLAC jazz, dubstep, classic, little metal. NOCS (after 26 hours break-in) ha