just an update here
Coded option 1 & 2 but decided to keep only option 1 at last as really no changes or any surround effect for all the different sound profile setting * expected as HIFI amp does not comes with any internal build in DSP setting for all these sound profile like B&W amp did.
It do improves but not very prominent as mentioned by NitenD. Overall I just feel like we only increased the gain from HIFI amp hence more bass and louder. But then I found HIFI original midrange speaker cant take it and started to vibrate when loud bass music is playing ... So conclusion is still worth to code no matter how cos at least we can still get " Equalizer " function in I-drive lol . Franky I did not try to adjust equalizer, is it real working or just like B&W fake cosmetic sound profile again ?
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