The DioES are tokens thats allow you to increase the number of Ethersound channels up to a maximum of 64. The channels are available according to the following rules : Basic DioES upgrade package : 16 bi-directionnal channels + 1 DioES-Key : 32 bi-directionnal channels + 2 DioES-Key : 64 bi-directionnal channels.
Products 
SV0058