Check the listing for details. CT Sounds CT-7EQ 7 Band 1/2 Din Parametric Car Audio Equalizer with AUX Input. Condition: New. Listed at 37.99 USD. The CT-7EQ is a 7 band 1/2 din parametric car audio equalizer designed to divide and enhance the segment of frequency for your car audio application. The car audio equalizer features 7 bands that divide 20Hz - 20kHz into 7 segments. Each knob can control the volume of each segment so that you can take full control over your system. Included with the car equalizer are installation brackets and hardware. Technical Specifications: Type: Car EqualizerOutput: 6-Channel RCA Output (Front, Rear, Subwoofer)Input: 4-Channel RCA Input (AUX & Main)AUX Input: RCA AUX Input with Variable Gain AdjustmentMain Input: Balanced RCA Main Input# of Frequency Bands: 7Din Size: 1/2Adjustable Frequency Bands: 50 Hz, 125 Hz, 315 Hz, 750 Hz, 2.2 kHz, 12 kHz Frequency Response: 10 Hz - 30 kHz ±3 dBSubwoofer Frequency: 10 Hz - 95 Hz Boost/Cut Range: ± 18 dB Signal-To-Noise Ratio (S/N): 90 dB Output Level: ±16 dB Bass Adjust: ±10 dB Mid Adjust: ±10 dB Treble Adjust: ±10 dBSeparation : >60 dBPower Source: 10V - 14.4V Input Current: 0.05A Max Output Voltage: 8.1VDistortion : 0.01% THD at 1V Output SD/USB : No