Where should I get my "feed"

I bought a couple of Equalizer chips to connect to an Uno, all well and good, it's the MSEQ7? (not at my desk to read the exact model)

Now question is, which is better, splitting the Audio Cables L/R Input (eg, from sound card > amplifier) or should I take a feed directly from the Amplified source? (Amplifier > Speaker)?

I would say from the direct source. Worked as a sound man for a few years and always feed the mixer to the eq then to the main amp.

cool, thanks...