Hearing the improvements, I suspect Hugo might have a better dac. There are problems though, not sure if it's limited to my unit or all Hugo.
Firstly DSD tracks play but you can't hear anything through the optical connection. For the coaxial connection, all tracks produce no sound.
As i mentioned view page back , that Hugo strong Point is their DAC Section is excellent , The amp Section is very Good
Thats why if you connect Your AK 240 , Hugo can make SQ improvement