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
Hello Everyone, 
Last night a friend emailed me about a (used) DarTZeel for sale (NHB-108). Any thoughts on this? 
Hi Rinpoche,

While DarTZeel equipment is generally very well regarded, some things in Stereophile’s review of the NHB-108 would give me pause, taking into account the low impedance of your speakers (4 ohms nominal, dipping to between 2.5 and 3 ohms or so in the area of 100 to 200 Hz, where a lot of music contains a lot of energy. Most notable among several points of concern:
The manufacturer strongly recommends using the Lo setting if the amplifier is to be used with low impedances. However, the amplifier then delivers significantly lower power at clipping—43W into 8 ohms (16.3dBW), 68W into 4 ohms (15.3dBW), and 95W into 2 ohms (13.75dBW)—with no reduction in low-power THD.
Best regards,
-- Al


So, overall this might not be a good fit based on the specifications of the amp vis-a-via the speakers. I hear you. There is no way at all of hearing them together. That is for sure. So it would have to be a sure thing. Thanks — I have no idea about the technical aspects. I just trust my ears and they have not heard the amp. I would have to travel to hear it and why bother if it is not advised. Okay, back to JR. So happy I have something wonderful to keep coming back to!!!!!