Not much difference in Tp-Link Archer C6 ver3 vs Archer A6 ver3 which is currently offered in market. Only one minor difference is Archer C6 firmware is made for mostly European markets while Tp_link A6’s firmware is specifically made for US market mostly.
If you compare the reviews of both the models you won’t find much difference rather than based on firmware Tp-link C6 is for EU market while Tp-link A6 is more of a US version. Overall it doesn’t matter so buy the one you are getting cheaper at your place. You can check price & of both versions below if you like. Though most of time I find Archer A6 to priced cheaper than Archer C6 so get Archer A6 if you’re getting a good deal on it.
|Tp-link Archer A6 v3||Tp-link Archer C6 v3|
| US Version Firmware|
|EU version firmware|
Currently version-3 of both Tp_link C6 & Archer A6 both have openwrt support. Version 3 of both Tp-Link A6 n Archer C6 have dual core processor instead of single core of version 2. Though most user report decreased wifi coverage in both successive models.
In previous version of C6 i.e. version 2 openwrt was supported while version 2 of Archer A6 didn’t supported it. Comparing to older version is not justified as older versions are hard to find specially online where most vendor are sending v3 models even on v2 listings.