The way I understand it: my '18 RGS comes stock w/factory stage 1, which is upgraded mid tier speakers using the head unit amp-150w. Stage II upgrades the speakers to a upper tier(CVO) and adds the fairing amp-300w(disabling head unit amp via dealer digital technician).
Currently it sounds decent sitting but weak while riding. Streaming improves the sound quality. I think adding the XM module would help.
Been toying around with bumping up to stage 2, wondering if it was worth the effort for the right price(slightly used).
Last edited by 18 Wicked Special; 03-26-2019 at 09:33 PM.