KZ - ZS10 Pro

Pros:
1) Practically the BEST hybrid KZ IEM so far
2) Lightweight yet robust, making it comfortable for long term/extended use
3 Descent in-box ear-tips) with medium-to-good quality cable
4) Metal grills

Cons:
1) Y spilt of the cable is plain dumb and tangle easily.
2) The rubbery material on Y Split swells over time
3) Slight hissing sound are audible on signals with certain type of music

-- Stats for Geeks--
- Audio Source: Redmi K20 Pro, Fiio BTR3, Acer Nitro 5, Lenovo Z2 Plus

- Sample: Pink Floyd, Led Zeppelin, The Beatles, Simon-Garfunkel, Bob Dylan, Pete Seeger (24bit@192KHz FLAC)

- Cable: Penon Audio Silver Plated SPC Cable, KZ ZS10 Pro Stock Cable, KZ ZS6 Stock Cable, KZ ZSN Stock Cable

The review compares the zs10pro with the SM e11 and the e50. I bought the e50 for 2.4k @hzone. When my e50 gone untraceable I ended up buying e11c as I considered it as an alternative. The sound signature is very narrow V-shaped as the mids sounded dull compared to the e50 which had the balanced kind of w-shaped sound. The e11 isn't bad but it needs to be driven at least 90% volume in order to balance the mids with other frequency. Listening to the high vols at all the time is impossible because each audio is tuned differently. I felt I need to buy one more earphone and decided to buy a bluetooth pair. Later I decided to try the IEMs which can be convertible to wired and bluetooth by differing the wires. The zs10pro comes as my choice after filtering my budget. First impressions are these are bulky and heavy on the ears which take time to get used to. Like earphones, I don't think this can be easily slipped on to the pocket while traveling. One may need a bag or something. The cable thickness is good but the plastics used for microphone and around the jack are poorest. The sound shape is balanced and neat up to 90% vol. Above which it may sound harsh and I never tried as it gets louder. The nightmare part of these IEMs was the pin connections. U need an eagle eye to see L and R markings and match the pins correctly. You need to be cautious while giving the connection as it's not as easy as plugging your phones every day for charging. It's best to leave unplugged those pins frequently. The blue tooth module isn't available with the Indian retailers and I hope they 'll be stocked soon. It's a decent purchase overall, The audio quality felt better in all the frequencies. I recommend this product if you want IEMs. But if you want a lightweight gadget look for some other.
Earpiece Design 3/5
Cable length and quality 2.75/5
plastics (jack/mic) 2/5
Comfort 3/5
Sound 4.25/5
Vfm 3.25/5

ahhhh let's see or hear or read
I saw I heard I'll write and you are reading :
so lest start with build quality then:
Plastic body with polished stainless steel backplate feels nice and solid, has just a bit weight to it that gives you the feel of really good build quality. The cable is not so bad either pure Cu with a clear coating on it, rubberised Y split box and 90° 3.5mm TRRS connector for a microphone so you can use ZS10 "PRO" to call your (whomever you want to talk to). The silicone tips: just throw them away and buy nice memory foam tips (you'll notice an instant boost in the low end with memory foam tips).
Now the hard part The Sound:
Sound is a very subjective subject. This has amazing low-frequency rumble
clear mids and crispy highs that will give you the information that you might never heard before plus you'll hear is spectacular imaging slightly narrower soundstage then T2 excellent sub/bass. I was listening to "Bad Blood - Vintage Ella Fitzgerald Jazz Taylor Swift Cover ft. Aubrey Logan - PostmodernJukebox" I clearly heard there was a clip while Aubrey Logan singing those high notes. I mean this IEM gives you those kinds of details so clearly that you'll notice immediately.
the low end is also nice tight and the sub will rumble your eardrums like an earthquake's frequency hits the 7 story building.
In just a few words: Just buy these IEMs, these could be 2nd or 1st best IEM under 4000 hands down after or before TIN T2. If you have T2 also give it a shot.

Gives a precise sound quality but not good bass.

These are not the best in bass treble or vocals but they do above avergae in everything and have decent detail in them You must buy a new cable and better eartips thoguh

Excellent pair of headphones. Justified as per price point