Wavtech linkDQ - 2-Channel Line Output Converter & Line Driver with PEQ and r...

Wavtech linkDQ 2ch LOC/Line Driver w/ Bass EQ

Wavtech linkDQ - 2-Channel Line Output Converter & Line Driver with PEQ and r...

AudioControl LC2i, 2 Channel Line-Output Converter with AccuBASS

X-Series 2-Channel Line Out Converter Digital Bass Enhancer with xBOOST and R...

AudioControl LC1i Active 2-Channel Line Driver/Output Converter

Wavtech linkDQ 2ch LOC/Line Driver w/ Bass EQ