I've heard the Marantz PM8004 and it made my jaw drop. It was powering a pair of Sonus Faber Cremona Ms ($10K/pair), and doing it perfectly: neutral, fast, totally musical, transparent midrange, smooth airy highs, and complete speed, control, and extension in the bass. PM8004 has a pretty sophisticated 3-band EQ with optimum turnover points and boost/cut range for dialing in subtle changes to the tonal balance. Reviews indicate that the (MM-only) phono stage is excellent as well. The PM8004 is the least expensive Marantz amp with an HDAM gain circuit and made at their Reference series factory in Japan. The amp section has an unheard-of 125 dB s/n ratio and it sounds like it. Details and venue ambience emerge out of nowhere and decay almost infinitely into a very low noise floor.
At the NAD's C375BEE price and power rating, I'd also consider the Anthem 225 Integrated.
At the NAD's C375BEE price and power rating, I'd also consider the Anthem 225 Integrated.