KEF builds an equalizer into the radio->DAC->crossover->amplifiers chain, and the default for that is much of what you are hearing. The other part is that they

KEF builds an equalizer into the radio->DAC->crossover->amplifiers chain, and the default for that is much of what you are hearing. The other part is that they hugely overbuild the amplifier sections (at least by rating -- 280W for the mid-woofer and 100W for the tweeter.