Thanks for the response. I figured out that the AMP2 seems to be down. I ordered a new one for testing and it worked directly, with the same settings. And after installation there is an LED in green.
My guess, the other one is bad.
But now I have another issue.
The current configuration is as follows:
1x Server on Synology with Logitech Media Server 7.7.6
2x Client RP4 (one with DAC+, the second one with AMP2)
In the LMS I just can choose two players, instead of 4 adjusted players (multisqueeze plugin and 2 player per RP). I think there is something wrong with the MAC-adresses, because host and IP are different.
What can I do to change the MAC adresses??
I tried -m <mac adress> already but not sure which adress I have to type there. I tried several, but couldn´t start the player witt this command.
RP1
hostname: AMP2
IP: 192.168.178.42
MAC from LAN: DC:A6:32:12:F4:41
AMP2 MAC-Adress of player: b8:26:eb:c1:71:f0
jack MAC-Adress of player: b8:25:eb:c1:71:f0RP2
hostname: DAC
IP: 192.168.178.41
MAC from LAN: DC:A6:32:12:F3:BC
Dac MAC-Adress of player: b8:26:eb:c1:71:f0
jack MAC-Adress of player: b8:25:eb:c1:71:f0