quality of sound with Vanity93 Light

hello.
absent person my writing.
I am French and I was not a pupil impassioned by the school.

I have just bought Vanity 93Light.
the assembly is very easy.
congratulation for work.

I am however one can disappointed on the quality of sound.
I had a Switch-Box 4 X Spdif which I connected on another source.
the sound is harder now, very digital, going up in the acute ones.
a time ago grinding ?
is there an adjustment to make on the chart ?
is the Hook oscillator of which quality ?

very good day

Hello,

first of all I would like to alopogize for delayed response.

Anyway, is your issue still up to date?
Did you try to connect the Vanity93Lite output directly to a DAC?
There is neither adjustment option nor oscillator which could affect sound quality.

Milan