A multi channel amplifier unit 2, wherein {HEAD ~ the DC blocking capacitance} comprises {TAIL ~ a first DC blocking capacitor} between the second terminal of the load and a power supply terminal and a second DC blocking capacitor between the second terminal of the load and ground 
comprises
A multi channel amplifier unit 2 , wherein { HEAD ~ the DC blocking capacitance } comprises { TAIL ~ a first DC blocking capacitor } between the second terminal of the load and a power supply terminal and a second DC blocking capacitor between the second terminal of the load and ground
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