Made for iPod / Zen Creative X-Fi sound systems

i600 and Z600 are in fact the same product in the series by Creative, the only main difference is the docking port for iPod (i600) and Zen (Z600). The i600 / Z600 are the first in Creative’s X-Fi sound systems, X-Fi which stands for Xtreme Fidelity can be further separated into two terminologies: X-Fi 24-bit Crystalizer and X-Fi CMSS-3D.
Within the sound system X-Fi 24-bit Crystalizer helps improve music play quality while X-Fi CMSS-3D, as you can tell from its name, triggers a more effective surround sound effect.

Other functions include, battery recharge during music play, music transfer via the speaker’s USB port connection. Both the i600 and the Z600 also have a neat remote control for better quality control.
The entire sound system comes with two speakers and a subwoofer making it a 2.1, on the whole, the well designed i600 / Z600 could easily handle a mini theatre or an aerobic class with an audience of about 30-40 without loosing any of its sound quality.
For Zen:

For iPod: