Vehicle-specific loudspeakers, which are 100% precisely fitting and can be connected via plug & play, are becoming increasingly popular due to their simple installation. After last year's improved V2 version with incredible 300 W RMS performance topped that again, ESX is now adding two more models in the QM class: The powerful QM-FOUR power amplifier is now available for 4-channel applications, who want to drive a separate subwoofer, can now use the new monoblock QM-ONE.
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