Levinson 36, Proceed DAP or Wadia X32 to upgrade my AUDIO-GD DA-7?


Hi

I would like to upgrade my XLAN custom DAC based on AUDIO-GD DA-7 (r2r).

I hear only 16/44 resolution.

The choice is among Levinson 36, Proceed DAP or Wadia X32, all in the range 500-900 euros. 

Which one is the best?

ulul