The ESP LTD Stream-1004FM, like its 5-string sibling, is made of a swamp ash body, but its look is vastly different. Clearly taking inspiration from the shapes of metal basses of yore, the walnut brown finish highlights the swamp ash’s natural wood grain. But the Stream-1004FM is not all looks. This single-cut bass with a carved-top body, a bolted neck, and active EMG electronics, puts as much focus on sound as on sight.