Music Hall 5.1 owners?

As mentioned above , I would like to know if the new 5.1 is actually capable of a cartridge upgrade from stock .
I have seen , in a couple of places , that the tonearm may not be of sufficient quality to take advantage of a cartridge such as a Grado Reference Sonata 1 or a Clearaudio Aurum Beta S Mk 2 .
Can anyone else speak to this point of view ?

Happy Tunes

Chayro;
So are you saying that this new 5.1 has a Pro-ject arm and
that it is worthy of a higher grade cartridge ?
Also your recommendation for the Goldring Eroica... what
will it sound like as compared to the stock Ortofon M3 (Magic 3) ?

Thank you