Difference between ZYX 4D and ATMOS

Here is more detailed explanation from SORASOUND website:
http://www.sorasound.com/truth-on-atmos-4d/

Still no word from the counterparty - KT...Are you here at all, if yes, can you explain why they are different?

They cannot explain why the carts are different because they are NOT different, except for the name. They look exactly the same. They have the same specifications, and ZYX -- not the current distributor -- told Mehran they were the same. As I mentioned in an earlier post, I wrote to KT Audio directly asking for an explanation and received no response. Nor will I (or you). What can one conclude from any of this except that the carts are the same and their claims otherwise are a shameful lie? The Atmos and the 4D are the same carts with different names for different markets! If that's not the case, somebody tell me how they are different, because I haven't heard it!!

Gsparsons sums it up nicely. The Atmos and 4D ARE different - they have different prices, different looks and different names.

It seems pretty clear that current ZYX owners are not interested in buying replacements under the new pricing policy from the new distributor. I've heard the Universe and it is quite good. What I'm curious about is after Mehran's supply runs out, to which brands of cartridges are these owners going to migrate?

I will migrate toward the new cartridge(s) sold by Sorasound.

I think Mehran's 'truth about 4D' is less 'evidence' than 'his understanding.' I do not think it is proof. If, however, the mfr was willing to receive money to relabel one cart as another when they were not the same, that says a great deal about the company.

If anyone has listened to both, they could tell us. If they are the same, what has anyone gotten other than a moral victory? If they are different, how serious is that? I have yet to hear of anyone who has bought a 4D or an Atmos and been disappointed.

And in the end, it does not matter. The 4D still exists (for the moment). It is what it is and it costs what it costs. If anyone wanted an Atmos, you can probably still get one from Mehran. If you wanted a 4D, you might have been able to get one from Mehran before, but not anymore. However, you can get one in the US from the new distributor/dealer network. If they are different and the 4D is better, then so be it. If they are the same and more expensive - it is no different a situation than all the other carts in the line which will be more expensive.