Under $1000 it's tough to find solid low end bass. I would try an NAD 368 if you are OK with a Class D amp or Marantz PM 7000N for a more traditional Class AB. It has a very nice large toroidal power supply and the overall build is a step up.
Both are streaming amps with decent DACs and decent phono stages. The Marantz also offers great bass management when if and when you want to add a subwoofer, the NAD does not.
From there, it's a pretty big step up to get over 100W/ch - you'd be looking at 2X the price.