When we were kids, back in the 50s and 60s, we, the music lovers and stereo source searchers, all knew that a perfect square wave was unattainable. The desire, of course, was a square wave in and an identical square wave out. Well, the Heathkits, Scotts, Allied and the like, weren't even close. Today, we are much closer to this perfection. Spectron Audio... take a look inside!

Spectron's class-D power amp modules, in powers from 125 Wpc to 550 Wpc, offer unprecedented efficiency and sound quality ...