Xv-1s competative carts mention in latest TAS


In the latest TAS Harry mentioned that there were 2 new carts that were compteting with his current favorite the Xv-1s, that he would write about in the future.

Any thoughts as to what they are?
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The way I read it was not two new cartridges - "but the XV-1s faces competition from 2 other designs" -- ZYX UNIverse being one?? Just a guess on my part. Will be interesting to see what he comes up with in a future review.
I'll revise my guess -- how about a new cartridge from Clearaudio & a new or existing but revised Air Tight model.