Why is the frequency response of the EVO 75/150 listed in the technical parameters as 20 Hz - 20 kHz/-3 db, when according to the amplifier manufacturer the frequency response stated in this tolerance is up to 35 - 48 kHz and in two independent laboratory tests it was measured up to 70 kHz. I don't have bat ears but it was one of the reasons why I didn't want to buy the device. You are showing the manufacturer's solidity, but why not boast about the data when the device can handle it easily.