Just got mine delivered and I’m about an hour in and WOW, just WOW. These thing walk all over the B400! At first I thought the treble was a little bit hot for me, but after a change of tip Final Audio E, and a silver/copper cable and all is good with the world! Passed my sibilants test - Minnie Ripperton - Loving You, with flying colours, Pet Shop Boys - West End Girls, Bass all present and correct. These things are sounding promising already Early days though yet, let’s give them some time and we’ll see.