“ I love the full size grado HF2 and older grado's but these do not sound good to my ears. Strident and uneven. These were not lovingly crafted or dialed in. There was no 'man' behind the tuning of these and this is evident in the final product. I'd love to see grado come out with a smooth yet dynamic sounding iem similar to the HF2 but am not holding my breath, especially when I've found...” --thelostMIDrange
“ I am lost for words for 2 reasons, 1st: These in ears behave much more like over ears headphones in all the good ways. 2nd: these deserve to be much more popular than they are, I am simply shocked that there is not much more renowned! I currently own the Shure SE535's as well as Sennheiser IE8 and have used and owned many of the 500 and under earphones, such as Monster Turbine Copper Pro...” --Tenor123
First custom earphone in the world with a single 14mm dynamic driver couples with advanced frequency suppression technology (FST). Frequency Response: 10-20000 Hz Impedance：16ohms（including cable） Sensitivity (at 1kHz)：116dB spl (1mW) Important: Due to the size of the driver, people with small ears may not be able to fit. We would need your ear impressions to check for sizes...