I have forgotten to share the translation of the LZ A7 descriptions here. So here we go: (an updated note, I noticed that I didn't translate the suposed "dual piezoelectric driver" that was mentioned from the original text; still, I'm not sure how is that going to work).
- IEM body looking close to A5; they also mentioned that it doesn't make any pressure even to females.
- 7 drivers per side.
- 9.2mm DD. It resembles close to a monitor's "bass driver membrane".
- The new dual piezoelectric driver seems to be imported, and it says that this new driver solves the problem of the noise floor when using adaptors such 3.5mm to usb-c cables for phones; it also has better sound quality than the previous one.
- 4 Knowles balanced drivers. They're mainly used for reproducing midrange and they are also implementing switches for these Knowles BAs; they claim that the changes produced by those switches will be noticeable, being able to increase evenly from 100 to 3k by 4db, and "directly" from 1k to 2k (i'm not sure about the meaning of this, maybe it means that you can manipulate 1-4dbs for 1k and 2k separately?).
- 5 pairs of mouthpieces, 3 pairs of aluminum tubes, 1 pair of steel tubes, 1 pair of copper tubes. They're solving the clogging problem from the filters of the last versions. (I'm also confused about the "tubes" and how are they going to be used).
- The female mmcx conector will be using a "protective version" of it. Mainly to improve connectivity, poor contact and durability.
- The cable is not decided yet, but they're sure that they want to make an upgrade, quality wise.
- The LZ-A7 is not going to be more expensive than LZ-A6.