True, But 90% of the folks that do build subs use parts form others, Cannot really do that with amplifiers with out some pretty good know how and loads of small electronic engineering background, Also getting a custom built circuit boards will not be easy aswell. I worked in a circuit board manufactor plant for a few years that stuff is not cheap to make for one off jobs, now builk stuff yes alot of places will not do one off jobs it isnt worth their time.Yes or no, depending on how deep you're looking at it...
Building an amplifier from a schematic can be done in a typically-equipped electronics workshop, building your own sub from scratch isn't going to happen without very expensive milling tools (or the ability to purchase OEM'ed parts in quantity).
Personally its a double edged sword both can get spendy but I will have to lean on the custom amp building being more complex and not ment for the average CA user.
