I don't understand how companies are claiming the watts they are when this thing is 120 watts per channel but weighs a ton compared to my receiver.
Outlaw did something very strange when they state this is a 120 WPC amplifier.
Probably the most important (to their decision) specification the average buyer looks at when selecting a power amp is how many watts it is, and it is almost like Outlaw doesn't want to sell too many of these!
For the Outlaw 5000, it is 120 honest (20-20kHz at 0.02%THD) Watts
into five channels at once!
The standard (including for your Marantz) is to specify wattage
into only two channels.
If the Marantz was measured into 5 channels (at 20-20kHz and 0.02% THD) I'd venture it would barely make 60 WPC!
So, Marantz is not faking their numbers, rather Outlaw is using a non-standard and rigorous method for specifying its power!
However, I must say, it has been my experience that the Marantz usually offers enough power for typical speakers at typical SPL levels. If you listen loud and your speakers are more demanding than most and have some impedance drops to 4 ohms or below, that is where I would expect that the Marantz's capability might be getting stretched and Outlaw 5000 will shine in comparison!
But by any measure, the Outlaw should serve you very well for years as AVR's become obsolete.
It seems like an excellent amp!