Audio Note UK, shown at RMAF by its US distributor AudioFederation.com, chose the Denver Show for the world premiere of its first USB-input DAC. The DAC 0.1X, an entry-level product that features neither anti-alias filtering nor oversampling, and uses a teeny little 6111WA dual-triode output tube that is said to behave like a 12AU7 but last a staggering 100,000 hours, was making fine sound paired with a complete line of Audio Note components and cables.