Basic TCP/IP Volume Controller

We are using MairList for playouts in a commercial environment, not for a radio station. The whole setup is IP based, inclusive of Dante speakers.There are no mixers or analogue hardware, like amplifiers. The players volume is controlled via TCP/IP. This was achieved through an Atterotech Axon C1 Controller which just broke.

Because it’s a pretty pricey device I was wondering if there is any other piece of hardware or software to control MairList’s volume by TCP/IP.