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
What are break-in test tones? 
Are you saying after the first 1500 hours if its the JR? Cuz I can't wait that long!!!!!

What will be the first thing I play on it? Now that is a thread we should work on. What is the first song you play on your new stereo?
If classical music is of interest, try Dvorak's "New World Symphony," Jascha Horenstein conducting the Royal Philharmonic Orchestra, Chesky CD31.  Out of print, but available from various sellers at Amazon:

http://www.amazon.com/gp/product/B000003GCZ/ref=olp_product_details?ie=UTF8&me=

And if classical music is not presently of interest, it very well may be after you hear this recording, which you will not believe was recorded in 1962!

Best,
-- Al
 
Rinpoche,
I'd play recordings that you both enjoy and are pretty familiar with. You're use to how they sound in your system and thus will easily detect any differences in presentation provided by a new component. This approach has been very effective for me through the years. We all here are interested to read your listening experiences with the select group of amplifiers.  This is an enjoyable thread. 
Charles, 
First thing I play when testing a system is album entitled 'Cielo e Terra' by Al Di Meola. It is atmospheric mesmerising acoustic guitar music.
Next I play vocal by Dead Can Dance. Then Bitches Brew by Miles Davis, then Inner Mounting Flame by Mahavishnu Orchestra, then the rest if I need to, usually not because by that point things are almost always clear to me. But if you listen to opera and big orchestra, it may make sense to start with that. Just don't expect too much - no system can adequately reproduce the power scale and instrument separation of a full orchestra. They can't record it adequately either, by the way.