Ultra Digital DLX SUB PRE Board 20V to 45V Dual Supply,SUBWOOFER GAIN Adjustable Preset, inbuilt Low Pass Filter 25hz to 180hz Uesd in Original Texas IC

DLX SUB PRE Board with Dual Supply (20V to 45V), Adjustable Subwoofer Gain Preset, and Integrated Low Pass Filter Usage in the Original Texas IC built-in Low Pass Filter (25 Hz to 180 Hz) and Subsonic Bass Filter (0 Hz to 25 Hz) Suitable All Audio Amplifier