If Charles Darwin studied circuits instead of critters, he’d be staggered by how far Positive Grid’s Spark elevates the practice amp. And while there are cheaper options, the $269 street price for all this tone, output, and versatility is a bargain. There’s now also Spark Mini, which pumps 10 watts through two angled, 2" speakers, and the Spark GO, which will fit in the palm of a hand, is on the way. Good stuff? You bet!