The amp is a mini non nonsens class d amp
I use wharfedale diamond 225 speaker and a 24 volt 6a power supply
It sound really good and loud,it might have a little enhanced bass and sometimes the highs especially if played a little loud (it can go loud with a 24 volt power supply) changes to a more pronounced,forward highs, as long as you keep it within it's limteds there lot's of good sound.
It almost sounds as good as my TPA3116 amp with a tube t1 preamp. Im not 100% shure if it sound better, it does how ever sound better than my TPA 3116 amp without the tube preamp.