Do you have any of the one's listed on your bike ? I can google with the best of them and was looking for a member that installed one and the cost and results after doing so.
I saw pictures of the alpine mounted on a valk on the Facebook page.
I have been doing hi-end audio for decades ( a/d/s/ for car Jeff Rowland for home) and to cheap out I was going to buy the Pyle amp.. But I couldn't do it as I know I wouldn't be able to live with it. So I have decided to get the SoundStream ( for the high pass options) when I start the front restoration on my interstate..
The ONLY reason I have not bought the SoundStream as of yet is I am still sorting out a battery and rear turn signal issue. I want to complete the trunk removal, battery and turn signal issue before I start the front fairing and audio system.