It's hard to get audiophile respect as 'The World's Best Earbud'... except from us! Holy cow, these tiny buds are as superb-sounding as many renown full-size headphones. Extraordinary bass response, fully coherent mids and a smoothly clear treble extension; frankly, we don't know how YUIN does it. The YUIN PK1 are engineered as inefficient, high-impedance earbuds so a good headphone amp is very highly recommended for maximum smoothness and musical detail. If you're seeking the very best that an earbud can offer, stop here. Astonishing.
What We Think:
Portable music geeks have stumped for excellent 'reference' earbuds that can match the sound quality of audiophile in-ear or big over-ear headphone designs. Chinese audio manufacturer YUIN rises to the challenge with the YUIN PK1, a set of unassuming earbuds that come shockingly close to top in-ear monitors [IEMs] but without the deep ear insertion and poor comfort issues of most IEMs. For listeners with sensitive ears, small ear canals or just for those who don't want to hassle with the fastidious and precise process of properly fitting in-ear headphones, the YUIN PK1 buds come as a sonic revelation. The most impressive thing is how clearly textured and musically detailed the PK1 sound once you have a headphone amp overcoming their rather demanding sensitivity and impedance ratings (for great earbuds that don't require an amp, check the low-impedance YUIN PK2 model). But for headphone amp users, the PK1's transparent treble range extension and tightly focused low-end punch is light-years ahead of any other buds we've heard -- as the PK1 upscale price indicates. Naturally, listeners should not expect much noise-blocking compared to deep in-ears, but if superb sound quality without total isolation is your goal, the YUIN PK1 will put a gigantically pleased ear-to-ear smile on your great-sounding head.The YUIN PK1 come with a selection of thin foam mesh earpads for adjusting the earpiece fit. A couple of pairs have the 'hole-in-the-middle' style and one pair without the hole. The PK1 has a quality 5-ft 'Y'-cable with even-sided cord lengths going to each ear. YUIN earbuds are available only with matte-black cord and earpieces. A basic wood-paneled little gift box contains the PK1 and all accessories like a gold-plated 1/4' full-size stereo plug adaptor. The PK1's 20-24,000Hz measured audio response matches that of many high-quality in-ear headphone designs. The YUIN 1-year product warranty is serviced exclusively through the manufacturer's Head-Direct/USA offices [firstname.lastname@example.org] located in New York, USA. One more thing: the YUIN booklet and instructions are written in Chinese, so good luck with that.