Check out Underwood HiFi. He had a good range of Project gear. I haven’t checked on the Project Box DAC specifically. I had been interested in the Project Box Preamp but ended up with a Schiit Freya instead.
There had been a pretty active Project Box user thread on HiFi Wigwam (UK-based, I believe).
The AudioQuest DragonFly Red is an inexpensive, MQA capable DAC. In the last few months, newly produced Reds come from the factory ready to "decode" MQA. Older versions of the Red can be updated by the owner. Not sure about MQA ability for the Gen 3 Dragonfly Black.
There had been a pretty active Project Box user thread on HiFi Wigwam (UK-based, I believe).
The AudioQuest DragonFly Red is an inexpensive, MQA capable DAC. In the last few months, newly produced Reds come from the factory ready to "decode" MQA. Older versions of the Red can be updated by the owner. Not sure about MQA ability for the Gen 3 Dragonfly Black.