The siren series In-ear monitors are named after famous rock songs about women. Jerry Harvey Audio produced a special version of the Roxanne tuned for the Astell&Kern in 2014. The collaboration was so successful that the two companies will now release two more models. The first new model is the Layla. This all new flagship model is nothing short of stunning visually as well as sonically....
“I'm not a high-end hifi guy, but I own a few pairs of headphones and earbuds so I'm capable of telling my experience. The Carbo Tenore has a generally dark sound signature, but that doesn't mean anything sounds recessed. They have decent bass as BAs, the high is not sibilant, the mid is good. The soundstage is not large. For around 35 bucks, you can't go wrong with these if the sound signature...” --tonyjiang
“A mids-focused specialist with a little bass thump and smooth, relaxed treble (recessed, but still has some detail). Not an especially engaging sound (a little too relaxed maybe). Decent across genres, but tend to congestion during busy/noisy passages. I find them particularly useful for low volume podcast legibility, though with podcasts that are poorly leveled, subject to intrusive volume...” --Raketen