DVD-A on Krell and Trivista and DV-50 question

I went to audition players yesterday and was surprised to see both the Krell and Trivista play DVD-A disks that I brought. I haven't seen much written up about the players' ability to play DVD-A disks. For the Trivista, how does the audio play? I assume its read as SACD, but plays through the CD path. Sounded pretty good (through probably not at the highest SACD resolution). Can these players play the high-resolution 2 channel layers?
Was going to get a DV-50, but the Trivista sounded better to me (I brought a headphone amp and Etys for auditioning).

For those with DV-50s, does the DV-50 have some kind of bass management? Me and my friend had a problem hearing the bass from the DV-50 (on SACD and CD). We were wondering if the unit had bass routed to a subwoofer.