So, if you were to take a 40 something year old Software Engineer, Put him in a Truck that weighs 80,000 lbs, and had 600 horsepower. Then ask him to design the most heavy sounding amp line he could... Where do you think his inspiration would come from? Well it would not come from the scenery, and it would not come from the CB Radio... Well the above describes me, and I put 100% of everything I know into this line of amps. Designed to get you the cleanest potential power possible. Full of Character and dynamics... This is Preampus METAL, and my inspiration came from the Engines that power these behemoths to 100 mph at 600 horsepower, 74 feet long, and 80,000 pounds of metal... This is the C-15 as in Caterpillar C-15 This is the ISX as in Cummins ISX (Not a play on the Peavery JSX) This is the Series 60 as in Detroit Diesel Series 60 The two amps that got their inspirations from other Places.... This is Catharsis This is Razor These are coming soon...Watch for them... KM