MP-303 Tube + Class D Digital HyBrid Amplifier Built-In USB DAC

Beautiful sounding Amplifier. I find that the USB dac sounds just great. I haven't tried using it with an external dac. I use very low efficiency speakers worth many times the price of this little piece and find that it stands up and kicks some serious bass out of them. Don't expect 50 Watts to wake your neighbors or be enough your block party, have realistic expectations and you will be pleased with a mellow top end with some nice detailing and wide sound stage and very decent bass. However, my feeling is if you have a tower with a little bit more impedance than my 4 ohm bookshelves you will enjoy a lot more electronic music style bass.