I am using this with my LG V20 for HiRes audio. Being of 51 ohms impedance they trigger the LG V20's Quad DAC and headphone amp and delivers unbelievable sound. NOT FOR BASS HEADS. The reproduction is balanced across entire frequency band with little boost at the higher mid and treble end. The soundstage is also quite good. The capabilities of this gear can be experienced listening to good layered recording (Jazz etc) of music. Bollywood numbers sound good but will not unleash the full potential of this ear plug. Bass is adequate with very smooth and rounded trebles that will never hurt ears in long listening sessions. Sub bass lacks a bit.Has lot of accessories in the form quite a few pairs of silicon buds including a double flanged bud and a comply foam plug (which gives me best listening experience). There is a phone adapter (another 3.5mm plug) which is intended for those smartphones which will not work with the built in phone remote (this I found from soundmagic site, after googling as there are are no manuals inside the box, which is the only con I could find). There is one more split cable for using the earphone in a laptop which have separate 3.5 mm jacks for earphone and microphone. The carry case is Red & Black is also a good utility add on and looks very good. There is also a plastic clip to attach the cord with shirt or collar etc.Although this has an impedance of 51 ohms (a little on the higher side) but normal smartphones are quite capable of driving this, but volume may be a bit on the lower side. I have checked this Redmi 4 and Redmi 5 PRO phones also.Overall a very good buy. Although I have a few more earphones, VE Monk plus, B&O earphones which were given free with LG V20, Knowledge Zenith (KZ), ZS-10, 1More Piston Fit, Sennheiser CX300B, Sony MDR7506, this pair may become my daily driver.Regards

Before purchasing it, I thought 51ohm impedance may not sound well on my Samsung phone. For trying purpose I bought this. When I used it with my phone, it supports well ND sounds very well, even on micromax also. Sound quality is very good, even better than my cowon and skullcandy . Hope I may get more bass after burnin.

The microphone doesn’t work when on call. When you speak, the phones reciever mic is used for voice transmission instead of the microphone extension in these ear buds. The Volume and Pick/Drop call functions work well but you cannot talk using these having your phone away from you. Ordered replacement highlighting the problem but again, no solution to the microphone issue. Don’t recommend a purchase. Buy the Apple earphones having superior performance in all aspects.

1st day .. i unpacked it ... heard them first tym .. thought that price doesnt justify sound ... but man after burning it for 1 day it started showing its true color .... amazing sound quality ... everything so crisp , smooth ... i can hear every instruments in background music which i couldnt in my earlier used earphone.... yess it justifies its price !!!