Hello there. I have decided to upgrade my old pc speakers to something better. I bought a pair of tannoy's mercury speakers and thinking to buy a roter ra 931 mk2 amp. I want to ask, is it possible to plug an equalizer on that amp? I dont want cd/phono/tuner. Just the amp and equalizer. Is it possible to do that on a pc system? I have an external soundblaster g6 audio card.