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
ricred1, i have not heard the 625S2 in my system, but I have heard the
625's on several occasions. The 625's are a good amp, but like I said, they sound to me like a ss amp ( nothing really wrong in that). The ss sound is ( at least to my ears) not quite the same "flavor" as the tube sound. No wrongs, no rights. 
daveyf,
I’m not concerned about if you like or dislike the 625 S2. I don’t understand why or how you make blankets statements about equipment when you admit that you haven’t compared it to a tube amplifier in your system, because you haven’t heard it in your system. I have the 625 S2 and in my system, if the recording has depth, it reproduces it. I’ve had and heard many amplifiers with music that I’m very familiar and the 625 S2 produces depth equal to or better than every amplifier I’ve listened to. No it’s not for everyone, but to suggest it doesn’t do something that it does is a disservice to OP that either purchased or is considering this amp.
ricred1..don't get your pan..... in a twist!
I own a customized ( by Jeff) model 8T...which frankly blew away the standard 625 in my system when I did an AB. My tube amp ( which I suspect you do not own--or for that matter any tube amp!) is an ARC classic. Like all great tube amps, it has a sound that no ss amp can achieve....none.  Sure, the Rowlands create depth, just not IME as much depth as the best tube amps of my experience. Unfortunately, I suspect that you have not heard what a great tube amp can do in your system...
That's not my problem.
Like I said before---no wrongs, no rights. Ok, next---
Rinpoche, of course that's okay. Your original Rowland/VAC choice was an excellent move.
Who can afford Dior? Well, Dior jeans are about $550 and up, Diesel are about $200 or more. Is the difference big? It depends, but generally speaking not too big. Chanel is a different story - really expensive.