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Monthly Archives: December 2019
QB-9 USB DAC — Twenty Upgrade
![QB-9 USB DAC — Twenty Upgrade USB DAC QB-9 Twenty Upgrade Board](https://www.ayre.com/wp-content/uploads/2019/12/QB-9-Twenty-Upgrade.jpg)
The best value high end USB DAC of all time just got a lot better! The QB-9 Twenty update is a significant improvement to our most popular product. The Twenty upgrade for this USB DAC is more than just the new ESS chip and improved clock. This upgrade...