Jeff Rowlands Amp and Dac vs. VAC amp and DAC


Hello, I am new to this forum but I have a question. I am trying to pair an amp + DAC with my Wilson Sabrinas. I have listened to Jeff Rowlands integrated with the Aeris DAC. And the VAC Sigma integrated with the Aeris DAC. Price is a factor and so is space. Does the 625 need a pre-amp? Any suggestions or thoughts? 
rinpoche
We know hundreds of them.
Rinpoche, while listening to your system with the Rowland try to dislike it as much as you can. And if you fail then you will have little choice but to get the Rowland. It's a lot of money for one piece of equipment.
Mapman, try Santoni, it's good stuff.
And slowly move the volume control up and down, the speakers should maintain the coherence, the sound should not break up. Since you listen to digital, the high frequency distortion may somewhat bother you, especially on fast dynamic solos.