Autocom's specs:
"Performance
Power Consumption: standby 20mA, average @ 70mph 70mA, average @ 100mph 100mA,
maximum 150mA with music at elevated volume. Power consumption is reduced when using in-ear speakers in place of standard headset speakers. Power consumption while powering a Kenwood FreeTalk XL (TK-3101) 1000mA.
Power Requirement: 12 volts
Power Management: Reverse Polarity Protection, Thermal Overload Protection
Fidelity: 25Hz-22kHz CD Quality
Impedance: 32 ohms
Sensitivity: 106dB"
I've probably got a bad unit or this looks like a summer road trip to Slingerlands, New York, home of the Autocom. I'm going to call them and ask, "Just how big a boy are you?" (kidding, of course)