It's not easy trading riffs with the giants of the highly competitive guitar amplifier business - Fender, Marshall and Peavey, among others.
But Paul Rivera has made a name for himself and generated more than $2 million in annual sales with the equipment he builds in a small, family-owned-and-run plant in Sylmar.
Rivera's amps can roar with the raunchy growl of heavy metal one minute and sing with the crystalline twang of country-western the next.
That versatility, coupled with ...