Denon often impresses us with its headphone and earphone products, and today we're hoping to add another model to a list.
Immediately, you see the same effort has gone into these 'phones as went into the s. Their bullet-like build, made from a machined aluminium, offers a feel certain to be alien to dedicated fans of Shure 'phones. Despite their heavy-sounding build, they're remarkably lightweight and feel no heavier in the ear than any competitor.
Packed into the box is an excellent zip-fastened carry case, silicon tips in three sizes and a 31-inch extension cable.
Our performance test started with a particularly bass-heavy favourite, 'Yeah Yeah' by Bodyrox. Hearing that powerful kick drum furiously pounding away without difficulty was a great start. The trippy distorted bass on Pendulum's 'Tarantula' was superbly driven by the C551s and vastly more impressive thans.
Moving onto some Primus and Les Claypool's sometimes-smooth, sometimes-frantic bass lines drove beautifully through these 'phones. Drummer Bryan Mantia's crisp snare had the punchiness you'd expect to hear through good hi-fi speakers and his intricate hi-hat and bell rudiments had the tight, bright flavour so integral to the Primus signature sound. Also, the Octoban-driven intro to Primus's track 'Eleven', allowed us to see perfectly then-Primus drummer Tim Alexander performing live in our head.