I just added a turntable to my multi-room Sonos system via Sonos Port, but there is absolutely no bass coming out of it. Can I put a hardware or software equalizer in-line to increase this? I don't see an option to adjust the audio/equalizer settings on the line in. I can adjust the equalizer every time I switch to my turntable, but I’d have to adjust it back when switching back to streaming, which is a total pain in the ass.