Enit.... I've owned two flagship Denon AV surround pre-amps & amps including the S10s monoblocks. The AVP-A1HD & POA-A1HD are currently in commission.
When it comes to their flagship reference products of which there is usually a release every 7-8 years, there is no disputing the build quality & reliability of the models built for the
European & Japanese markets.
Look at the build quality of the DCD-SX1. People who are quick to bash Denon for not being "high-end" or not "musical" have no idea because they have not experienced limited release flagships like the S1, SA1, & now SX1.
I would still choose the Denon AVP-A1HD over the McIntosh MX151 for its versatility, consistency & reliability. Already 5 years old, the upgraded AVP-A1HD with its POA-A1HD partner remains relevant & can still hold its own against other current AV pre-amps out there.
As for D&M Holdings managing their product network outside of Euope & Asia/Pacific, it's a totally different beast & the North American market are probably getting the short end of the stick.