LAMM M2.2: DIFFERENTIAL AMP OR NOT ?


I have a technical question i want to plug in the subwoofer Rel b2 with the Neutrik cable and i need to know if the amplifiers are working in "differential mode" (DIFFERENTIAL OUTPUT AMPLIFIERS).
note that there will be one sub (2) plug in each mono block!

There is what Rell says " The output topology of the amplifiers should be checked before connection to the sub bass system is made, if it is not clear from the amplifier user manual then consult the manufacturer"
However it is not written in the instructions manual ....
Thank's
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