Hi,
Same trouble with non working Alsa equalizer.
Quite a difference anyway i use an usb FDA and play sound with raspotify and it works like a charm without eq
Already tried the code posted above, (switching from hw 0 to hw 1 in my case) into asound.conf.
and added OPTIONS= --device eq into the raspotify conf file.
No sound at all.
Have to disable eq with justboom to have it back.