Canada 16 (the highjacker),
I also have the MA R370HD subwoofer and recently ordered the Auralex SubDude HD. Well, I set it up today while my other half was out so I've had several hours to listen to selected Blu Rays that I've played often to have an informed decision on any noticeable difference (LoTR Fellowship: Mines of Moria; X-Men: Logan getting his truck blown up).
After some time comparing with and without the SubDude, and even performing the setup again on my AVR using the setup mic on a tripod and the SubDude in place, I can honestly say that I can hear no difference whatsoever! I can only assume that either my environment with carpet on a concrete floor is pretty good, or that the SubDude simply doesn't do that much - at least to my ears, which is what it is all about (rather than some perceived improvement based on other peoples opinion).
That's the audio side of things, but then we come to the aesthetics of the SubDude. Personally, I think the SubDude looks totally naff! For a supposed Home Design product (the 'HD' in its title), whoever designed this obviously didn't have the 'Home' part in mind or any idea of matching it to the prevailing shiny black home cinema systems that we see much of today. First off the top is black/charcoal but of a matt cloth-type material that is a total magnet for any home pets (I can visualise me forever hoovering the dogs hairs off!), but more importantly concerning the dislike of this product is the naff grey foam that forms the base of it. Apart from the foam making it look a cheap product, they could have at least made it in black; as it is the grey lump of foam going across the front looks simply awful and in no way does it fit with my nice shiny black sub.
I guess if I had noticed an improvement in sound I may have found some way to live with it or to try and improve its look somehow; although not sure how successful that would have been.
I guess you realise by now that I am totally underwhelmed by the SubDude and will be returning it for a full refund (fortunately I bought through Amazon, so I'm assuming no problem as it still looks as new).
Paul.