I had an E30 II Lite, and I compared it with the E70 Velvet, but I didn't notice any difference in sound, I also have a D10s, and I can hear the difference, less refined on the highs, they are small nuances anyway, I also had a PA5 II Plus , for me in terms of volume it sounds really pianissimo, an Aiyima A07 Max sounds much louder, in terms of sound the Topping PA5 II Plus sounds very good, but too linear for my tastes, I prefer the Aiyima A07 Max in terms of sound, power and volume.
This is my video of the Topping PA5 II Plus