It’s not that any eardrum dilettante or amateur musicologist out there doesn’t want analog sound. But a digital file is a lot easier to handle than lugging around some big-ass tube amp octupussing its cables all over the place like trip rope. The folks at Tubecore, however, seem to have finally figured out the best of both worlds. Convenience with chest-massaging bass. So here’s the deal with their Duo amp, the first Bluetooth-powered tube speaker: four inputs with one control, and an on-board customizable computer with 24-bit DAC — which means you can stream basically anything, uncompressed, so you can do your best “Dark Horse” imitation in the comfort of your own closet. The finishing touch: the magnetic speaker is available in 27 different colors. Presently available at lowered price for $479