Why would anyone really want to "max out the potential of their subs"? Are you competing, or just being that asshole riding down the street forcing me to listen to your shitty music? Anyways, no a clip indicator is not going to work as well as a $5K scope, in the hands of someone who knows how to use it. Next, if you are afraid that you are clipping your amp, buy a more powerful amp. Headroom is a good thing. Every single component in every single one of my systems has an amplifier that is rated at significantly more power then each component is rated at. Set the amps correctly, listen for stresses in the system, then dial it back. Why would you want to buy an amplifier that you have to push to it's limits just to achieve your desired goal? You are pushing linearity, risking clipping, and building heat. None of these are beneficial to your expensive components. Would I buy a Smart car to make the run from LA to Vegas at 100MPH, or would it make more sense to buy a Corvette to make that same run? Pushing a Smart car to it's absolute limit is not beneficial to the vehicle, but the Vette will have a ton of headroom. Set the system at 0db for daily driving use. There is no need to push it beyond that. I am also quite sure that your subs drown out your front stage... awesome. I would dial it back further to blend well with the front stage, but I doubt your ultimate goal is sound quality. All my systems subs are set at 0db with my ears (I am listening for stress, not clipping), and then all are dialed back via the remote to achieve a flat system, not an overboosted bass heavy rattle trap. That way if someone wants to hear what my subs can do, I can safely show them, but when I actually want to enjoy my system, I can easily dial it back to normal listening levels in just a few seconds.