There is plenty of gear that has never been heard off, and some are extraordinary. I cite Monolithic Sound as the prime example. I doubt they are still around though. I remember they had momo left and right amps. Yes, the uber line consisted of an amp that ran only one channel. You needed two to run comps up front. they were priced well over a thousand each. It was way out of my budget, so i ran Autotek Mean Machines, another brand not many were familiar with, but were outstanding. I still own and use those same amps. That's why i never run anything other than Autotek Mean Machines. Hopefully, my set of Maxxsonics Mean Machines hold up to their Zed Audio counterparts....Time will tell.