Denon is no stranger to the home audio market. In fact it was making HiFi kit long before home streaming was even a thing. Times change, and new markets get new dominant players. For streaming, that means Sonos -- company Denon is tackling head-on with its Heos range of internet-connected wireless speakers. With three products in the range (numbered 3, 5 and 7 -- rather than 1, 3, and 5) there's little doubt that Denon is gunning for a share of the Play series' market space. In this first look, we put both systems side by side to see how they stack up. We'll give them a deeper dive at a later date, but for now head to the gallery to see how they compare.