“The following is taken out of its context from my review here http://www.head-fi.org/t/687962/asg-2-ck100pro-and-ue900-reviews-the-dysfunctional-family I just thought that the CK100Pro deserved a review here. I don't own it but have auditioned it extensively over about 8 days. Though I just might buy it later... CK100Pro: The Sheldon Cooper of iems Contrary to the warm...” --MoonYeol
If you want earbuds that will give you crystal clear audio at a great low price, the Audio Technica ATH-CK303M Earbuds is your choice. With a 20-20,000 Hz frequency response, gold plated connector, and a comfortable fit that provides maximum sound isolation, the ATH-CK303M Earbuds are an incredible value.
“ Audio-Technica ATH-CK6Accessories – Single-flange silicone tips (3 sizes), detachable ear inserts (3 styles), and soft carrying pouchBuild Quality – Housings are made of metal with oval-shaped plastic nozzles and paper filters. Though strain reliefs are excellent all-around, the cabling itself is hugely disappointing (especially compared to the excellent cables on Audio-Technica's higher-end...” --ljokerl
“ I upgraded from the CK7 and am very pleased with the sound on these. Much more bass extension than the CK7s, good separation, sounds very balanced overall. Reading what's been said about the CK90Pros, a lot seems to apply to the CK70Pro as well - slightly dark, very neutral, hard-hitting bass for a BA earphone. They seem to have the same cables and plug as the CK90Pro (from pictures of...” --xer0x
“ CK7 earphone is a nice detailed ear piece with titanium housing which makes it very durable. For me, although i am not using it very often this works the same as it used to be the first day i bought it. They require burn in time at least 100 hours and you can definitely tell the difference in the bass section and the mids. Comfort: i would recommend to be worn...” --FarCry
“ Anyone looking for a highly balanced, highly detailed sound look no further. The CK90 pro is a great IEM and is unfortunate it doesn't receive as much recognition as it should. The best part of it's smooth sound, is it's lush mids; on par with great mid names such as Sennheiser and Shure. The bass is good for an armature driver. It has great presence and impact, but it lacks the...” --bisayaboi
Audio-Technica?s ATH-CK9 in-ear headphones deliver outstanding isolation from distracting background noise. These in-ear models are equipped with a balanced armature driver for crisply detailed high-fidelity audio. With no active noise-cancelling electronics, they achieve significant attenuation of outside sound.