So are you just looking for some EQ to shape your audio so it sounds a little nicer etc...... you sure don't need that big ol mixer to do that..... just lookup microphone equalizer on ebay you can easily mod any of those units to work with your radio...... you will get EQ settings compression mic gain etc even a noise gate if you want to go that far.... and there small and not very expensive..... I own two of them and there great