Dear Customer~
We have a notice for RS150B.
Some products in RS150B do not support XLR to RCA Coverter Cable. Please Do not use an XLR to RCA converter or XLR selector for the XLR (Balanced) output of the RS150B. Product can be damaged in specific circumstance
(Serial No : ESL105BB000101~160 / EBK105BB000201~300)
The fully balanced XLR output of the RS150B has a low damping resistor value for the + signal and - signal, so if an XLR to RCA converter or XLR selector is used, the OPAMP of the RS150B may overheat.
If overheated, the OPAMP may be damaged, resulting in noise.
If the above situation occurs during use, the OPAMP of RS150B should be replaced with an improved OPAMP module.
For your reference, depending on the type of conversion, the above symptoms may appear in the case of an amplifier that converts the full balance to unbalanced inside the amplifier rather than full balance processing. Even in this case, the OPAMP module must be replaced.
If the above problem occurs, please contact the agency where you purchased it.