Lautsprecher Technik - Dynavox FMP3 Bass Boost MP3-Player Mit FM-Tuner
Audio Edit: 8D, BASS BOOSTER APK for Android Download
XLOC22X 2 inputs / 2 outputs High Voltage Active Line Output Converter — NVX
PLOC2 2-Channel Line Output Converter with Bass Boost Technology with Remote Bass Knob and Voltmeter, Perfect for Adding a Subwoofer and Amplifier to Your Factory Stereo - Recoil Audio