2. amps-preamps
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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
facten
2,971 posts
 
rinpoche you can send me a message through Audiogon email and then I can give you direct contact information
rinpoche OP
154 posts
 
I am not sure how to do that? Sorry, I am new to Audiogon. I don't see where I send you a message?
rinpoche OP
154 posts
 
Hello Facten, I figured it out. Please let me know if you get my message. Thanks!!!!!!
rinpoche OP
154 posts
 
Do any of you have any experience with this amp:  

Coda Audio 15.5 Class A?

almarg's avatar
almarg
9,670 posts
 
CODA makes some very nice products, Rinpoche.

However I see that the link at their site for the specs on the 15.5, while going to specs that are stated to be for the 15.0, indicates an input impedance of 50K unbalanced/1K balanced. And the link for the manual for the 15.5, while going to a manual that is stated to be for the 15.0, indicates an input impedance of 50K unbalanced/10K balanced.

Presumably it is best to use the balanced outputs of the Aeris. The Aeris may or may not be able to drive an impedance as low as 1K with optimal results, but more often than not a preamp (if you were to eventually purchase one) would not be able to. And many preamp designs, especially those that are tube-based, would not be able to handle 10K with optimal results, either.

Best regards,
-- Al
 
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