duyu said:

Yes, LZ is making A4 or A3v2. I told him please use more common shape and color.

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I think silver and black need to come in as well as gold....gold is something I'd not choose...but when you have no choice......

duyu said:

Yes, LZ is making A4 or A3v2. I told him please use more common shape and color.

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I imagine that LZ said that he's waiting to check how DQSM D2 will sound.

robervaul said:

  I imagine that LZ said that he's waiting to check how DQSM D2 will sound.

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Arch-rival designers...and arch-rival re-sellers...........!

peter123 said:

Please tell him to call them A4 as well

All this variations of the same model number makes it hard for an old man keeping up.

I'm working on my review of the **** UEs now and compare them to the **** UE, you get the picture lol

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Right! Every time I'm headache seeing the model numbers in the Chinese IEM thread.

lohb said:

 
Arch-rival designers...and arch-rival re-sellers...........!

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Revenge.
Because shortly thereafter, DQSM will want the D3. Lol

Hi @duyu, I think you're the first in the world to get their hands on the A2s.
Please let us know what you think vs old A2. The Bass had some improvement?

duyu said:

Yes, LZ is making A4 or A3v2. I told him please use more common shape and color.

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Ooooh now that is some good news. Forget the color, some common sense in the design department would do wonders
 

peter123 said:

Please tell him to call them A4 as well

All this variations of the same model number makes it hard for an old man keeping up.

I'm working on my review of the **** UEs now and compare them to the **** UE, you get the picture lol

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you mean picture(s) considering how many different models there are haha (not correcting you, just showing how many there are)

robervaul said:

Hi @duyu
, I think you'rethefirst in the world toget their handson theA2s.
Please let us know what you think vs old A2. The Bass hadsome improvement?

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I can't hear there is a significant difference on bass. I need more time.
The most obvious differences: closer vocal(less spacious), less sizzling, and warmer.

duyu said:

I can't hear there is a significant difference on bass. I need more time.
The most obvious differences: closer vocal(less spacious), less sizzling, and warmer.

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How's the SQ so far? It's been about 3 or so days. 

kevang said:

How's the SQ so far? It's been about 3 or so days. 

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Terribly busy recently with the grading. Will do a comparison later this month. Sorry guys.

Paulpark222Nice LZA2S review

robervaul said:

@Paulpark222Nice LZA2S review

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 English review coming soon as well..
 
 
Paul

This is only a non-professional comparative review between LZ-A2 and LZ-A2S. My aim is to state the major differences I've seen and heard between them, rather than provide two individual reviews. I hope this comparison is helpful for those who wants to buy A2/A2s.  
 

 
The name of A2S should be borrowed from iPhone Xs, which means that it is only a slight improvement of A2, and it should sound similar with A2, too. LZ set the price of A2S ($70) much lower than A2($90) in order to make A2S more competitive. The drop of price was made possible, maybe, by A2S's using a single BA instead of a hybrid BA (sorry to LZ if my guess about the cost cut is wrong). Since the 3-unit TK13, which I didn't listen to, sells at less than $100 (similarly did the A2 at $90), $70 maybe is the price line for a pair of decent 2-unit BA-DD IEM in the "red-ocean" Chinese IEM market. However, we all know that more units doesn't imply better sound quality. My concern is only about the sound quality. As to the technical details, they could be found on the LZ-A2S Chinese Taobao page.  
Let me state my verdict first: Though A2 has three units, and A2S has only two units, their performances are very close, they differ mainly on sound signature. I think A2S is even slightly better than A2, because 1) the location of the vocal sounds more natural, 2) the warmer sound feels right. Given A2S is much cheaper than A2, and A2 was already agreed by many to be a great pair of budget earphones, A2S should be a great choice at the $70 price range.  
Source:
- FiiO X3+E12DIY(Muses02+BUF634)
- Files: flac / 24bit wav / DSD  
Comparative Review:
- Build Quality: A2S’s cable is softer, while A2’s is like a rubber band. Both IEM are quite sturdy. 
- Design: I don’t like gold color, but I know this is just a matter of taste. Personally, I think A2 looks better.
- Comfort: Largely the same. A2S is 4g heavier than A2 (21g vs. 17.2g), but I can’t feel the difference. The stock black ear tips best suit my ears.
- Isolation: Largely the same. Both IEM's isolation are good enough but not great. I believe double flange ear tips would provide better isolation, but my ears are too small to fit in those tips.
- Easeness to drive & burn-in time: Both IEM are easy to drive, and their performance can be improved using an amp. Neither of them needs more power than the other. They both take some time (3-5 hrs) to burn-in.
 
Sound:
- Sound signature: A2S provides a warmer sound. Other differences may be too subtle for me to notice.
- Bass: I’m not a bass-head. So, it's not a problem for me that both A2 and A2S are not bassy. They provide good bass impact, but not punchy enough (compared to A3). A2 and A2S's bass performances are on a par.
- Midrange: Both have very close vocal. But A2S's vocal location is more natural than A2's. A2's vocal sometimes makes me feel like someone is singing inside your brain.
- Treble: A2 is a bit sibilant, while A2S isn’t. Sibilance may make one feel the IEM offers more details, but this can be done by emphasizing the highs without really improving the overall sound quality. More importantly, sibilance itself won’t make the music more enjoyable, but quite the opposite. Since A2 emphasizes a bit more on the treble, A2’s treble may be more (or over?) exciting, especially when listening to violin, but also fatiguing. On the other hand, A2S’s more controlled treble extension feels right to me. (I was listening to Mutter’s Carmen Fantasie when I mentioned violin. A great CD.)
- Soundstage and Instrument Separation: Largely the same. Both are very wide and with a reasonable, but not too much, depth.  
Conclusion
Though A2 is more expensive, and is a 3-unit IEM, I prefer A2S. A2S is the IEM I now use when traveling to work. A3 does sound better, but it is too showy and inconvenient to wear them on bus or subway, not to mention it's more expensive.
Compared with A2, I find listening to A2S more enjoyable, and less fatiguing. I like A2S's extra warmth over A2, without sacrificing the details or the soundstage.         

Thanks for the comparison! That sounds pretty wonderful actually. The LZ-A2 is still my favorite IEM, and if the vocals have been improved and sibilance brought down a bit (although A2 was already good) this sounds like something right up my alley - even if the improvements might be slight.

kvad said:

Thanks for the comparison! That sounds pretty wonderful actually. The LZ-A2 is still my favorite IEM, and if the vocals have been improved and sibilance brought down a bit (although A2 was already good) this sounds like something right up my alley - even if the improvements might be slight.

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You're very welcome!
I am worried that the comparison is not informative enough, but I've tried to avoid saying anything that I'm not certain.

I'm enjoying a lot with the A2S.