Well, the PM 6003 was a great amp - correct? And now the Pm 6004 is *even* better? Heh, the old one was perfect, but Marantz managed somehow to improve on top of that. Does that seem like logic?
The *only* way to listen to the Marantz is with "Source Direct" switched "on" because otherwise the noise is just annoying. The "Loundess" non-sense, even the presence of such non-sense already speaks tons about what Marantz think about its own amp. And I agree with them, toothless, no bass, no dynamic and involvment. To me failing to recognise the amp is only useful is end of the discussion because if you are OK with PSSSSSSSSSSSSSSTTTTTTSSSSSS then I guess it will be pointless to continue. Good for playing fairy tales, not for audiophile to brag about
As commonly recognized, NAD boasting 45 Wpc will have more like 60-70 Wpc. And Marantz with 45 Wpc makes it to 15-20 Wpc real power. So there you go comparing 60 Wpc to 20 Wpc - not a good start for the Marantz. On the strong side the Marantz has good details in the mids and this would be awesome had there be no noise so that you can actually plug good speakers to it. Unfortunately this is not the case. One can even make a good point that for the price the high and low register is quite in the norm and it would be matter of personal taste and like. That's OK with me too, I actually like the resolution and the idea to have crisp mid-range sound. There's a little bit too much distortion too, but I could cope with it too.
However, when it comes to articulation and macro-dynamics the Marantz is dead in the water, it just wipes out all of the advantages, it doesn't kick, it doesn't bite, it doesn't involve you are listening to a remote music, it you want the Marantz never gets personal enough.
Very good amp for a 5-year old. Not an audiophile gear we are talking about.