Questions about Teufel System 4 THX

Hi, check out these three: - Sony STR-DH590 (5.2 channel, FM) - Onkyo TX-SR393DAB (5.2 channel, FM, DAB+, AM) - Pioneer VSX-534D (5.1 channel, FM, DAB+) These are all slightly above the input power of the speakers, but not by much. As long as you don't run the system at maximum volume all the time, it's not a problem.

Yes is compatible. The nominal impedance is 4- 8 ohms.

The player should not really matter. But to get the maximum THX, the player should be THX certified.