I have the Artwizz Mini DisplayPort to HDMI cable purchased (Artwizz Mini DisplayPort to HDMI cable, aluminum (compatible with all Macs with Mini DisplayPort), 2m). It works fine, the transfer (of sound or images) will not be interrupted and you do not need HDMI cable longer.
Unfortunately I can not recommend this. Best, the Buy Artwizz cable!
Note! I am trying in vain for more than a week to return the cable to Handynow! No response to emails (according to the invoice must be requested a return delivery note via e-mail) and the hotline is very difficult to achieve. You have already promised me that you will contact me, you have not made (3 days later) Very bad customer service !!!