Sprout will do your speakers a favor, compared to the Denon. Plug your laptop in via USB and sit back and enjoy your ripped music on your single posted Elac’s. It has additionally RCA inputs, if your Denon has RCA pre out for front L + R, you can even play all other sources via the Sprout. Stellar Gain Cell DAC + S300 is the next step up, but you miss the phono stage and wireless connection. But it will play great.
I’m going to a Magnepan event tonight at my local dealer, he’s bringing the 30.7’s, I’ll question the rep on it for you. That said no way the Denon “doubles down” on output into 4 ohm I would also doubt the 80wpc if driving all channels.
I’ll let you know what the Maggie rep suggests if you wanted to go with small Maggie’s
-JP
Does „interesting“ mean, a little too fat and recessed sounding and too big imaging at this distance?
Just guessing by seeing the setup 
Loving Maggie’s for what they can do elsewise.
Strangely when I was there they were running them with a Parasound Amp even though the Dealer has PS Audio and Macintosh among others. The later events may have used other amplification. Treble was hot and somewhat forward and bass was thin. I expected some “slam and sparkle” that I didn’t get.
Hey ya’ll, got sucked into work for a while which is why I went dark. I do have a couple updates. I was able to resurrect my parents old Bose 2.1 system and hook my speakers up just for reference, it sounded about the same as the Denon. Now that I have that going I at least have something while I try to get Denon to RMA or whatever. I’ve also tried it on my neighbors 150 watt class D (cant remember the name now, but it looked expensive:) I also thought a detailed example of this lack of clarity might help and to see if any of you can duplicate it it your own systems.
Ran across an example a lot of people might be familiar with, the title sequence from stranger things. At 5 seconds the ostinato starts (outlining a M-M7th chord). There’s a ‘pad’ for each note (lets call it a sine wave for giggles) and a gritty synth sound inside (square wave say) and they are both out of tune with each other. I’m assuming this was done to enhance the uneasy horrorish feeling. On headphones/iPad its immediately apparent, but on speakers you can pretty much only hear the ‘sine wave’ part (even stuffing my head right next to woofer) so it sounds beautiful and in tune. My suspicion is that since the drivers in the headphone/iPad weigh fractions of a gram they can do whatever they like but a 6.5 cone has too much mass to move back and forth. It creates some gorgeous sounds, and if going for just overall beauty/fullness of the sound, my speakers are hysterically better. It just takes me out of the music when I know there’s something there that I’m not hearing or only hearing a subdued hint that its there.
The sprout100 does look really appealing, but if it is just a limitation of physics I’d feel like I’m just abusing their return policy. And if dropping 600 for a maybe improvement, maybe it’d be best to just get a really good pair of headphones (hate wearing headphones though) and be done with it. Maybe I’m getting exasperated too, thanks for all your comments and help!