Sony XM-ZZR3301 review
Model features: 1100W max power, 330W x 1 RMS into 4 ohms, 600W x 1 RMS
into 2 ohms, variable LPF 50-300Hz, variable bass boost (40Hz 0-10dB)
Subsonic Filter - Built in variable 12 dB/Oct LPF (Low Pass Filter) from
50-300Hz enables users to concentrate the power on lower frequencies.
High Level Input with Sensing Power On - Direct connection (High Level
Input)can be made with the speaker output of your car audio unit if it is
not equipped with RCA line output. High Level Sensing power on feature
allows the unit to be activated without the need for remote connection.
Bass Boost - Variable 0-10 dB 40Hz bass boost provides additional bass
response at lower frequencies (rear channels only).