I'm familiar with the 305s, have a pair. The amps are nothing to write home about, typical class d, and isn't even that sophisticated in that they supply the same power to mid-woofer and tweeter (and much modern music has gone thru a variety of adc/dac conversions too). I use high quality streaming (pretty easy to do), and have a high quality tt (well as far as that goes with vinyl). I've not had electronics interfere with my enjoyment of music....and I've got quite a wide variety hanging around. Your comparison methods are what particularly?