The smile on Aldo's face when he drew out the Nazi symbol on Hans Landa, was the exact same smile I had on my face as I found out the perfect EQ setting. The tech is great! Like exceptionally great, it's got everything you could ask for. If you speak then the music drops, of course you can switch that setting off when you want to sing along. Its ambient, and ANC feels like I have tech ears, weird right? But to be honest its actually really cool when on a tap you can just remove any sound you want.
Really Cool Features:
1) When you have the ambient mode on, and you're shutting the door of your car, the slap of the wind doesnt hit you. You'll have to try it to really understand.
2) When you speak the music shuts off and plays back again in 10 seconds.
3) it knows where you are and activates NC automatically.
4) Sounds so good, you ll cry.

Cool Features:
1) It looks great. Like a really fancy earpiece.
2) Wireless charging... WTH
3) SUCH a long battery life, I had it for a week, and I only charged it once.

Not as cool Features:
1) The ear tips feels kinda rough on the ear... I had almost 0 earphone usage for 2 years (not kidding), and putting this on for more than 30 mins kinda made my ears rough.
2) cant sleep with it if you sleep on 1 side of your head. keeps clicking buttons.
3) Not as great a connectivity with apple as with android. I would have loved if it would have features like the Airpods for ANC and ambient. But cant complain because you can download an app and do all that stuff.

I would 100% recommend this if you care for sound. This is a premium product, with excellent sound, so respect the sound. Airpods pros dont even come close to this sound.

2nd Review after around 6 months of usage.
Definitely experience LDAC once in your life. All of my friends/family loved these buds. They jokingly say I shell like a celebrity. but we all know audio is a serious business for sensitive ears. The difference in music! the first time I wore it was amazing.
Disclaimer: this was my first OWN pair of TWS, I tried many others (beats, sennheiser) from my friends before purchasing these XM4.
ALSO keep in mind after spending 20K on a earbud be ready to spend 20K/yr on the services to experience LDAC and 360 every day! That is indeed a big investment. Some say LDAC is overrated, well its true only to a certain extent.
Because a Majority of services go upto 320kbps a lot of artist at-least in India try there best to pack as much work as possible in 320 itself, sure there might be differences going 550+ but that's being more analytical, BUT there's a twist even if you are jamming to 990 kbps with LDAC there is a different sound signature overall its not flat or analytical as expected, I am not super experienced in fixing the default eq with tweaks. Its enjoyable BUT might not be audiophile grade even with LDAC and 990 kbps songs.
Feels premium, no joke, not fancy. Maybe the white could look a bit fancy but its Sony, black feels serious.
Worth it you may ask? Can you shell another 20K/yr for the premium audio then go for it. I am shelling around 6-7k/yr on Tidal HiFi, I used HiFi Plus for a while just for 360 but I didn't have a lot of those tracks so downgraded. not bragging but I do feel the difference when streaming the same songs on Spotify and Tidal. If you have no intentions of going HiFi explore more if ANC is the only other feature you are spending on?
Like others mentioned here ANC are super cool too, all the different settings in the app are really helpful, like changing settings based on geolocation, I personally use it like gym, housing colony, streets. I use the ambiant voice control shortcuts while talking with someone at a shop. ITS JUST feels TOOO COOL SOMETIMES!

Sony - WF-1000XM4

An master piece

Best sounding earbuds till date.

PROS:-
Pause to speak feature works well and very handy when you are with friends and work mates. (I have kept it on 5sec)
Fit is great and the passive noise cancelation does a decent job. (not a good one)
Active noise cancelation does a good job and also works well with bike mode where it cancels the breeze noise.

CONS:-
Battery life could be better.
Base heads could do with a more tighter base. (My Jabra 75t did a better job in my personal opinion)
When I switch on the DSEE Extreme and
'Priority on Sound Quality' mode the range reduces by half or even more hence when these features are switched ON, ideally the source (mobile phone) needs to be at arms length.
App design could be much better.

These are excellent sounding earbuds, the comfort could be better for long use.

Still testing out the beast , but the ANC once you get the right ear fit , is amazing but yeah higher frequencies are not really cancelled off that well, the sound quality with the the right EQ is really good , the 360 sound seems gimmicky to me atleast considering the services are basically not there in India, battery wise and ease of use wise it's really great.

This is my first deal with HZ. What I have experienced are...
1.Superfast delivery.
2.Genuine product.
Now If I get good after sale support HZ will be my first stop for buying headphones.

Have been using 1000xm3 for 2 years and want to update to xm4. Design is good and headphones snuggle comfortably in my ears (M size), even though have to get used to inserting the piece. Packaging is very simple and efficient. Design is way more compact than xm3

First time listening, put on Ants Marcing and #41 by Dave Matthews band as the usual sound testing songs. Sound is very good. Much improvement from xm3. Bass and other sound is good even though it's not burned yet. R/L and staging is great.

Can't really comment on difference for noise canceling from xm3 coz barely used it. Ambiance and off mode is the usual. Ambiance mode is still good. Memory foam is great update for listening experience.

Really can't wait till this earbuds gets burn, and hear the optimal sound.

Here is my honest review about these.

Delivery:
Thanks to Head Phone Zone for light speed delivery! Packaging was good and best thing about HPZis they provide cards for each kind of music to read your delivered item and it's extremely helpful! Kudos to team.

Comparing it with:
I have been using Sony xb400 and sp510 both are extra bass headsets with excellent music quality but they both do not have the noise cancellation feature and audio call clarity is joke. Jabra elite 85t has been my go to for WFH calls but it's always a sacrifice on music quality to me. I have been waiting for the XM4s since almost an year and finally it landed in India as it has been boasted to be the best in everything.

ANC and Call:
The TWS pair gives u unmatched ANC capabilities and the beam-forming bone conduction earphones works wonders for call clarity. The NC for calls is unbelievable. Me bursting bubble wrap just 30 CM's away from my head and it did not make it to the other end of the call. The case and the app as well. The ambience more and touch to listen to surrounding, speak to listen, all are NOT gimmicks and they do work amazingly well.

Waterproof rateing (Theory Not tested):
Please not that Charging case is not IPx4 rated and will not survive water splashes and only the buds are splash protected. I did not attemp to test and will not be wearing the same to gyms as i prefer the warhardend wi sp510 for the job.

Music Quality:
However when it comes to music clarity, I could not find ground breaking difference between my SP 510 and XB 400. They sounded almost similar with little to no difference. They were better than WI XB 400 in terms of clarity and with WI SP510 , i really couldn't tell the difference. Extremely low to no white noise. Now WI XB 400 and WI SP510 are not bad, infact I love them for the thump and like the latter more for focussing more on vocals. It's what I expected in my Jabra 85t. But fortunately I got the best of all worlds in the XM4.

Fit:
There are 3 pairs of foam plugs with medium fitted to default. However I had to switch to small ones. No my ears are pretty big but the foams of medium were equivalent to large silicones i have seen on my other earbuds. The earphones are lightweight and foam tips are comfortable.but BEWARE , the size of the TWS WILL not fit small ears. My wife's earlobes were small for the earbuds and she couldn't fit it (2.5 CM's max earlobe canal distance is small).
Mine was around 3 cm and it fits well. So if you have small years you may not be happy as they will not fit in the earlobe.

Charging speed:
Charging was fast with fast Charging but i wont recommend wireless charging as it tends to heat the case a bit.

Recommendation:
For bass heads you will love the headset and i recommend using "PowerAmp equaliser" for Android to enhance the sound clarity and bass. Unlike other software equalizers this does use hardware to enhance bass.