Originally Posted by bumpnzx3

you should have no noise after the amp- but you never know. especially in something like a factory amp- no where near the quality of something like McIntosh, older A/D/S/, etc. the fiber optic cable may be loseless- but it would still have to pass through the circuits in the amp prior to going through his converter

it's just me, but i wouldn't tap into a signal after the factory amp- hence me saying what i did originally. all of my own personal audio installs as well as installs i do for others- i aim to have to cleanest sound possible with the budget and equipment i am given to work with.

i don't really know why i am thinking this much about it though- it's obvious the orginal poster isn't after a SQ system- he just wants to add a little bump in the trunk. noise isn't as big of an issue when dealing with the substage.