Splandfers,
For part of my response, please see post #21 in this thread.......the same applies here. I auditioned the Aune and several other units versus the Maverick (and I assume you are referring to the Aune T series as it has a tube output) unit is a USB only input with no other digital inputs. Here are some differences:
(1) Both units have replaceable tubes for audio output
(2) Both units have analog input
(3) Prices are comparable
(4) Aune has only USB digital input....the Maverick has USB, digital coax, and digital optical inputs
(5) The Aune has analog output and headphone ouput....the Maverick has an analog output from standard DAC as well as a tube output
(6) Aune is a train wreck in customer service, Maverick has the best customer service response in this market....same as (or better than Schiit)
(7) Aune has soldered DACs, the Maverick uses socketed DAC chips for easy swapping
(8) Aune has 32Ohm/1000MW, 120Ohm/400MW, and 300Ohm/150MW outputs, while the Maverick has 32Ohm/1000MW, 300Ohm/500MW, and 600Ohm/300MW outputs ....so you can see that the Maverick has much more reserve power
(9) Both units have 24bit/96 kHz digital input, though the Maverick upsamples the data if needed
(10) The Aune has a 6922 tube, which can be tube rolled....but the tubes are more expensive than rolling the Maverick 5670 tubes. Also as mention previously.....the Aune does not have socketed DAC chips.
(11) Build quality for the Maverick is much better than the Aune
In the end I ended up replacing the Maverick D1, with the Maverick D2 dedicated DAC and a Schiit Magni headphone amp. This gives me the ultimate solution, though I like the D1 for an all in one unit. I think that is about it.