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
By the way, do you have suggestions for other amp pairings with the Wilson Sabrinas? I am open-minded at this point. 
rinpoche for a purchase of this magnitude any good store should let you do an in-home audtion, I assume the store is local to you? Perhaps the owner can bring the amps over and at least do an audition with your speakers if he won't lend you an amp? I would expect better service than what you're describing for a good brick and mortar shop.
Thank you -- I will ask if they will do it. When I asked one of the guys in the shop he said, 'bring in your speakers'. They have been around a long time so I will see if they are willing to do it. It is one DAC and 2 amps. Should be worth it for a purchase of this magnitude, as you rightly say. That is a great suggestion. Thanks.
Do you have suggestions for other amp pairings with the Wilson Sabrinas? I am open-minded at this point.
I suspect that Knghifi’s suggestion of the VAC 200iq would avoid the concerns I expressed about pairing the Sigma with the Sabrina. Especially if two of them were used as monoblocks, but possibly also using just one in stereo mode. I say that in part because the 200iq includes a third output tap, designated as being for 1 to 2 ohm loads. That in combination with the reference in its description to 6 db of feedback suggests that the output impedance of that tap is low enough to avoid the tonal issue I referred to. It is also more powerful than the Sigma, of course.

A risk of going that route, however, would be the possibility that having a preamp in the chain might ultimately prove to be sonically desirable, and a preamp that would do justice to the rest of the equipment would add up to very big $ in combination with two or even one of those amps. See this thread for some discussion of using the Aeris with and without a preamp.

From a technical standpoint I would also expect something like an ARC Ref150SE to be a compatible pairing. ARC tube amps tend to have lower output impedance than many or most other high quality tube amps, as well as having very robust power supplies. However its size, complexity, heat generation, cost, and again the possible desirability of a preamp may rule it out. And I have no knowledge of how well its sonics would synergize with those of the Sabrina.

I’m not particularly knowledgeable about VTL products, but the fact that most of their amps have only a single output tap, nominally rated for a 5 ohm load although claimed to be suitable for 2 to 8 ohm loads, would give me pause.

Regarding Rowland solid state amplification, I have no experience but FWIW a number of members here whom I consider to be particularly credible, including Ricred who posted above, use it with great results. As far as I know there are no technical issues that the Continuum S2 or the Rowland power amps would present in your application.

Good luck. Regards,
-- Al

There is a VAC Phi 200 used for sale. I could pair that with a new VAC pre-amp (an entry model) if you think that might help with the issues you are describing. Wilson Audio approved the Sigma SE but that doesn't mean they have paired them. In terms of an in-home audition, I think this is a very good idea. The Rowland gear is, I think, less of a problem but I would loose that magical tube sound. Yet, I would gain in ease of use and given I will be adding in TV, maybe that is a good thing. See why I started this thread!!! It is like comparing two delicious desserts, and you can't eat both of them. Would love more of your excellent thoughts on this!! Thanks