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
And this purpose remains unclear. As a philosopher, I am sure you understand it. Good luck with your audio quests.
Thanks.  I appreciate all the fine suggestions. I have one crystal cable power cord from the old set up. And a Transparent usb that seems fine. Otherwise, all is well. 

I must say I don't philosophize about equipment but equipment enables me to philosophize, if that makes sense. 

best wishes to all of you, R
Hi rinpoche;
I was reading this thread initially about sabrina cause i own it then i realised we have the same system.
dev200+sabrina; and i m looking to jump to arc 75gsi; i wanted to ask you how is your journey so far with vac?
havn t you missed dev200?
Hello -- again,
Someone wrote to ask me how everything has worked out. Well, I got rid of my Devialet and purchased Jeff Rowland 625S amp + Corus to go with the Wilson Sabrina's. I love it. I just added the JR PSU and I am hoping this will provide the warmth that I am looking for. So far, so good -- but I am only at the beginning of the break-in time. All is well here and we are really loving it. Sounds fabulous. Brings out the best of all worlds. I hope this answers your question. There is no way the Devialet can compare, though it is an amazing machine for the price and for what it does -- pretty much everything. But the JR is incredible overall and I am so happy I listened to my own ears plus some practical advice from my dealer and friends (Guido included). Who knows, if I found a used VAC one day I might add it in from time to time. But for every day and all uses, JR is the man.