Yes I did, before I bought my NFB28. What Kingwa means "pretty much identical", he just want to say there is noch much difference, if you have asked many questions for different devices, you would understand in most cases he uses these words to say this device is enough, you don´t have to buy better one.
NFB28 is fully balanced DAC and fully balanced Amp in one device, Compass 2 is only discrete DAC/ SE AMP, which uses only one ESS9018 chip, NFB28 uses 2 chips, 2 DAC parts (fully balanced), and has a much better power supply, if you use single ended amp, not like a fully balanced amp, which only use one part for the SE output, both parts of fully balanced DAC are being used, so you definitely get a difference from Compass 2.
I have heard both devices connected to NFB6 using SE output, they are not the same, dude.