Everything from retro-style axes to interstellar effects and insanely powerful amps caught our eye in Nashville.

DLS Effects showed off the brand-spankin' new RotoSPIN. This rotating speaker emulator allows the player to dial up multiple rotary cab sounds and mic distances through the tweeter intensity and bass rotor level, and the switchable overdrive section adds grind, edge, and OD clipping like old rotary tube amps. $259 street.