In that price range consider to get a a FocusĀrite ScarĀlett 18i20 or a Presonus AudioBox 1818VSL + a Behringer ADA8200 or similar + a BNC Angle T Connection 75 Ohm + a BNC Resistor 75 Ohms + a BNC Cable 75 Ohms + 2 optical cables. You would get 8 prosumer quality stereo IOs without sync issues.