This ice-cold, sharp-edged, black-on-white two-way standmount loudspeaker sounds smooth, evenhanded and essentially neutral. The baby brother of the larger Amphion Helium 520 floorstanding loudspeaker, the 510 also includes the best bits of its elder sibling, the key component being the 'waveguide' surrounding the tweeter. A variation on the horn theme, with a truncated throat and a very wide flare, it loads the tweeter and has several benefits. One is that it allows the crossover point to be an octave lower than usual (at around 1.6kHz), which moves it below the most critical part of the audio band.



Link: TechRadar