Whether you're upgrading the earphones that came with your MP3 player, or upgrading the £60 'phones you invested in initially, Denon's £150 AH-C751s could be a stonking entry into high-end earphones, if they're anything like their predecessors, the excellent s.
As sound-isolating earphones, they aim to passively block out ambient noise around you without the electronics involved in noise-cancelling headphones. But are they worth £150?
Sturdy aluminium enclosures make these a weighty but robust pair of earphones, with decent cabling and a detachable 0.8m extension should you only need a short wire. Every connection is gold plated to ensure you get decent audio performance, and a lovely sturdy carry case is supplied to keep things safe when not in use.
When they are in use, you'll notice the sound isolation -- provided by soft silicon tips on each 'phone -- is fairly good, and a range of differently-sized tips are provided to ensure you get the most comfortable fit.
The importance here is placed on sound quality and, as with the previous C700s, we're pleased to report it's superb. The C751s demonstrated an ability to produce beautiful highs, punchier mids than the C700s, and the same smooth, deep bass we loved so much in their previous incarnation, with a response range of 12-24,000Hz backed by Neodymium magnets.