“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.
The Audio Technica ATH-CKM33 Earbuds give music lovers an amazing listening experience. With an incredible 5-24,000 Hz frequency response and 10.7 mm drivers, the ATH-CKM33 pump out crystal clear audio normally only found in very expensive earbuds.
“Summary of my experience with these: Build: Feels cheap and plasticky. In fact the box appears better made than the earphones. :) Treble: Very detailed, forward and sharp. No real sibilance BUT is very fatiguing after even after short listening sessions Mids: Again very detailed but there appears to be some forward and some recessed elements depending on the track you are listening to. The...” --Krisman
“Very nicely balanced overall. Bass very slightly lacking, but this is a matter of taste. Lots of tips to choose from, and came with foamies! Cheaply put together though. Loads of microphonics. Clip is useless. Thought I heard some imbalance but it went away with burn-in. Questionable quality? After further burn-in, my Betas became very bass...” --inline79
“While the high end IEM market has more options than ever, the sub $20 market is largely full of mediocre products, save for a few gems like the Xiaomi Pistons and LG Quadbeats. Last year, before the Xiaomi fever, Brainwavz released their own contenders: the Deltas. I reviewed these a while ago, but I guess I never uploaded the review before my computer decided to crash, so this is my short...” --Ishcabible
“ These are budget-minded basshead's dream come true. Others might not be satisfied by the bottom-slanted sound, which can be hugely improved with equalization, otherwise they sound dark and laid back. The sound is precise, with engaging musical quality to it. Bass is very well controlled despite the amount. Mids are neither forward nor laid back, perhaps slightly boosted in upper registers....” --AstralStorm