A:Answer Bose actually sells this setup on their website with a Onkyo HT-R593 receiver as a package. If you look close at the pictures they have for the HT-R593, they clearly show the model number on the back as the TX-NR535.
So my guess is that, yes, this receiver should work with the Bose Acoustimass 6 speakers as it appears to be the same receiver shown bundled with them on the Bose.com website.