Now my company Howell Advanced Techlonogy Ltd,Co can make this come true.My company has developed a new type DVR Card ---Ti series,which can mix together and help you monitoring up to 64 channels with audio and vedio synchronizedly. Ti series include HW-404Ti(4channels),HW-606Ti(6channels)HW-1212Ti(12channels).They have so powerful fuction,because they have features as follows: *Ti 642 chipset *Hardware compression,vedio and audio compression just be solved by Card itself instead of CPU,alleviating burdens on CPU *Low power consumption *Up to 64channels sychronized audio and video by inserting Ti sieries cards,wihch can lower your cost and convinent for your monitoring *High quality at a best price since we are leading manufacturer of DVR cards Any other products' information,welcome to visit our website .We sincerely hope to establish long-term and steady business relationship with you.We will try our best to support you. I'm sure our Ti cards will be your best choice.Powerful function,best price,professoinal technical support,and sincere after-sale service for you.