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
rinpoche;

For what it is worth, I have Silnote IC & digitals in all 3 of my systems - Morpheous in my headphone system, Posiedon in my 2nd system, Posiedon & Orion in my main system. Musical to my ears in all cases, may or may not be for you but a possible consideration. Good luck with the rest of your search

Thanks! The suggestion is for an interconnect which I don't have. I will keep the Crystal Cables for now. Used is a good way to go. Maybe once I know what amp I am getting we can talk interconnects? Gotta hook the Aeris to the Amp. A short run overall. 
Great Paco de Lucia flamenco guitarist played custom Conde guitars, and I can see why. The Conde is fast precise and balanced with brilliant high frequences. The Montero is warmer deeper and more sophisticated. I would take the Montero any day.
My final piece of advice could be this - do not listen to LAMM or close to top of the line VAC unless you consider them for the future. If you do you may not want anything less. I think, used pre/power amps from LAMM would cost at least $20K, and this would not be his best. Perhaps much older models could be found for $10k - $12K for both.
Inna,
Thanks, I will take that into consideration. In Canada, the LAMM sells for $30,000++ depending on the deal. And I will not listen to top of the line VAC or I will never buy anything else. LOL

As for the guitarists, I liked both. But I really liked the piece by Gonzalez. That amp would that constitute?
Rinpoche,

I feel your pain.
About a month after your first post, no amp, no interconnects, no music, no inspiration.......

J. :(:(:(