Pyle brand 4 band MP3 equalizer

POWER SUPPLY :11-15V DC NEG.GROUND MAX.OUTPUT:6 VOLTS RMST.H.D :0.01%ECHO DELAY TIME :200MSFREQUENCY  RESONSE :10HZ-30KHZ ±1DBS/N RATIO:>90DBSTEREO SEPARATION:>-75DBTREBLE BASS RANGE : ±15DBINPUT IMPEDANCE :20K OHMINPUT SENSITIVITY :0-3VRMS

with SD card

equalizer