yeah this is another thing worth mentioning. The cardinal's use MMCX, and I tend to own quite a few MMCX cables vs the .78(?)mm used on the BL-03. Also worth mentioning that while the cable on the cardinal is definitely nicer than the stock BL-03 cable, it doesn't scream high-end or anything. In fact it's only a 4-core cable. But they still sound fine to my ears, and I do have the ability to easily play around w/ different cables in my MMCX collection. Cardinal stock tips also fit very well and didn't sound bad at all, whereas the BL-03 stock tips are garbage. One could very well rock the stock package that comes with the cardinals and enjoy a great sound and fit. But you still have the opportunity to get slightly more via tip rolling, and perhaps cable swapping as well. The same can't be said of the BL-03, where tip rolling is mandatory, and cable swapping is highly advised.