Audioengine A2s with the D1 and feeback on RCA/USB
Mar 5, 2013 at 10:47 PM Thread Starter Post #1 of 6

CirrusPilot

Head-Fier
Joined
Sep 30, 2012
Posts
83
Likes
16
Hi all, 
 
I recently purchased a pair of A2s with the silicone stands. Love the speakers, but I am not a big fan of their sound driven from the 3.5mm jack on my Macbook Air. I bought an Audioengine D1 and thought I could hear a noticeable increase in sound quality (all music FLAC), but am I imagining this? I have read mixed things on this site about whether the A2s actually benefit from a DAC. 
 
Anyway, if I use the RCA outs on the D1, the instant I connect the USB cable to the Air there is feedback from the speakers. I tried 2 different RCA cables and an RCA to 3.5mm, and each time there was feedback. It doesn't happen when I use 3.5mm to 3.5mm, but I don't want to use that because it means I've got a cable running from the front rather than the back. It kind of upsets me that the D1 is doing this. I am probably going to return it. Any thoughts?
 
Mar 6, 2013 at 10:46 AM Post #3 of 6

CirrusPilot

Head-Fier
Joined
Sep 30, 2012
Posts
83
Likes
16
I just returned it outright because it was the only unit the store had. I am wondering if it has something to do with the Macbook Air's USB ports? But then I would assume it would also be giving me feedback using the D1's 3.5mm jack as well, which it was not. 
 
Is the D1 good enough to really make a difference in the quality of music coming out of the A2's (everything is FLAC)? I hate to spend that much money if the improvement is only marginal, and unfortunately I didn't really have enough time to test it out because of the defective unit. 
 
Mar 6, 2013 at 10:50 AM Post #4 of 6

obobskivich

Headphoneus Supremus
Joined
Dec 29, 2007
Posts
11,206
Likes
589
Location
Barsoom
I doubt it - it was probably just a manufacturing defect in the RCA jacks on the specific D1 you had. If you had a replacement or another device you could try to confirm this, or if you have AppleCare I'm sure you could take the thing into an Apple store and ask them to look it over, but I'm guessing it was the D1 (if the Mac had serious issues with grounding, you'd probably hear it through the TRS jack too).
 
Mar 7, 2013 at 1:36 PM Post #6 of 6

CirrusPilot

Head-Fier
Joined
Sep 30, 2012
Posts
83
Likes
16
Got the buzzing problem solved. Turns out if the speakers use a 2-prong plug (which A2s do) and you have the computer plugged in with a 3-prong charger, there is a grounding issue. I used the Mac's 2 prong plug, and the buzzing instantly went away. Great success! 
 

Users who are viewing this thread

Top