I just added a Luxman 509 in and it’s pretty incredible with the Heritage. I was worried maybe some second thoughts with these 85db speakers. But no issues at all. It is sounding really excellent with all genres of music. I auditioned a number of Integrated (not with Heritage) and it came down to the Luxman or Krell.
The best piece of gear I’ve purchased. Strongly strongly suggest an audition if a Heritage user.