They were from Gainsville...I met them back about 1989. One of them was involved with inventing the MRI. US was the 'house brand' for one of the shops up there. The little KA50 was nearly unstoppable. One of the coolest things was that no two amps looked alike in the beginning...they used whatever surplus heatsink material they could find.

I don't think the old punch amps were all that underrated...I think it more had to do with their unregulated power supplies, the speakers of the time, the lack of other quality brands, and perception. Back then, if you had two rockford 12's on a punch 150 (whopping 180 watts mono) you were the shit. You also have to remember that 140 db was loud, and guys like Virgil Williams were hitting 147...with 16 15's !!! There were so many shitty brands, that rockford stood out. Good subs would hold like 250w rms...but they didn't have the stiff suspensions and huge motors that today's woofers have, so they didn't need as much power.

As sub amps, the old punch series wouldn't hold their own nowadays, I'm afraid, especially on today's speakers. What's really sad is what we had to pay for these things back in the day. I just have to chuckle when people tell me how expensive stereo stuff is today.

Toby