heat is normal to happen. edifier put heatsink outside while some others hide inside. make use the air flow of woofer to blow.
dont mind the amp classification, its not big watt power to begin with

outer heatsink dont represent what amplifier class design it use.
such as many old "classic" altec dont have outer heatsink at all, but my class d speaker amp got exposed heatsink

swan hivi x3 got independent amp, professional xlr socket, representing the flat tuning of studio monitors.
typical studio monitor dont use netting speaker cover unless outdoor type that use metal grillz.
not every one's cup of coffee like u mentioned.

edifier has bass port, which you can tune the r2800 bass response by stuffing in some cloth material or sponge.

better dac dont represent in %precentage% but the ability to reproduce original content. which means good records get better and bad recording get worse

This post has been edited by ktek: Sep 17 2014, 09:09 PM

class DD

r1600 is small, unable to cover full range sound especially bass side.
actually u can look at the specs, 4" cone usually cover about 80, 90 100 hz

5.25" can go near to 60,70hz

6.5" can go 50hz

8" even better

r1900t3 is 5 incher, im not sure availability but expect still in the market about rm 3xx

r2500 i dunno, but r1900 confirm got bass and treble knob.
it say r1900 using rare sheep fur pressed cone if i remember correctly.

u will definitely hear the improvements. less shaking midbass and stronger front voice or instruments.
pls estimate the dimension first. it will take up more space than hibiki 2.1