I have been more than happy with the stereo and HT sound quality with my NAD T175HD pre/pro for more than 6 years. If 4K or Atmos are not at the top of your list, look into one of these or even better an Anthem AVM50 or D2V. Not sure what affordable is but these were all a minimum of $3000.00 plus when new with the D2V coming in at $6000.00 or near.
Bill
Bill