There is a small risk that in certain configurations when using split sample rates (48K/96K), clocking noise may be audible across the inputs on the DL231.
This is a known issue and a service bulletin has been issued to address this. This requires that the unit be sent to a factory authorized service center to flash the CPLD codes on all 6 input cards.
Only authorized service centers shall perform these procedures.
To request an RMA to bring the unit in for service, please fill out the support ticket form found here.