Channels 9.2Onkyo TX-RZ50 9.2 Channel Network 8K AV Receiver 7.2Onkyo TX-NR6100 7.2 Channel THX Certified Network AV Receiver -Sony STR-AZ5000ES AV Network Receiver, 8K HDR 11.2 Channel 9.2Onkyo TXNR7100 9.2 C...