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
Got it. Amp first. Cables later!!!!!!!
When that time comes, I might ask you all for suggestions. 

R
 rinpoche an overall piece of advice, one i learned later in this hobby, slow down and perhaps try to just enjoy the process as much as your goal. I mean your shopping for a new stereo system how exciting is that?? And as I like to sometimes tell people the very best deal out there........is equipment you already own! So totally check out the Crystal Cables with your new gear it costs nothing and you may love the combo. Not to mention those are very well regarded cables in their own right the sister company of Siltech if I remember correctly.
Thank you. I will try them for sure. Get used to everything. Maybe down the road try some loaners to see if there is any substantive difference. In the meantime, I will need interconnects. That I don't have!