I just got my second Aiyima A07 which i use to drive a subwoofer. I have a Aiyima pre tube amp (A03) which is connected to the first 07 amp for the main speakers. I use the line out of the 07 power amp to drive a Boss BX55 sub crossover which is connected to the RCA of the second Aiyima A07. I get sound but the volume control of the amp does not affect the volume, looks like i get a line signal by RCA..i can control the volume by crossover but would like to use the volume control on the amp it self. What could have happend?
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