or audiophiles, classic old tube amps are still the very best for listening to music on. It is just something special in that old tech that has not been replaced in the modern era with all its digital stuff. Getting digital (new) and analogue (old) in one product for a bit of fun is not very easy, but the Tubecore Duo is an amp and speaker that changes the game. This piece of kit gives old style tube kicks and adds the portability and tech of digital audio. The Tubecore Duo ($479+) features a dual, single phase vacuum tube pre-amps, a 100 watt solid state main amp + mono block 30 watt sub amp, twin 4″ composite cone 50w reference drivers, and a 3″ composite 30w long-throw subwoofer. For some modern twists, Bluetooth and Wi-Fi connectivity have been added.