I just bought these on AliExpress. Very good deal on these IEMs as they are well built and offer excellent performance for the price. Cheaper price than I found on Massdrop.
You need to apply the $1 coupon of the Seller store to get to the above price.
You also get 5% Cashback through Cash Rewards.
Specs:
Shell: Aluminum alloy
Driver unit: 2 dynamic, 2 balanced armature
Impedance: 15 ohms
Frequency response: 7 Hz–40 kHz
Sensitivity: 105 dB +/- 3 dB
Noise Isolation
Cable: 47.3 in (120 cm) +/- 2 in (5 cm), removable 2-pin
Connectors: 3.5 mm
Reviews:
https://www.head-fi.org/showcase/kz-zs6.22686/reviews
http://www.thephonograph.net/kz-zs6-review/
You can also get the below accessories including many more and apply a coupon which gives you $3 off when you spend $43.
1.2M High Purity Oxygen Free Copper Headset Silver Plated Wire 0.75mm Pin Upgrade Cable For Original: https://www.aliexpress.com/store/product/KZ-ZSA-ZS3-ZS4-ZS5-…
Bluetooth 4.2 Wireless Upgrade Module Cable Detachable Cord: https://www.aliexpress.com/store/product/KZ-ZST-ZS3-ZS5-ED12…
how is this compare to this