Quote:
Originally Posted by FmrAmInAm
I took advantage of the offer and got the whole deal: MicroStack and bag, and having never used a dedicated DAC before, I have to say that I'm really amazed at how much of a difference the DAC makes (I'm using the optical outs of my MacBook Pro and an Airport Express). The amp, as well, sounds great and is a definite improvement over my old (2AA-battery) Total AirHead.
I have noticed one thing, though, that I'm wondering about. If I use the amp with batteries (I've tried both Energizer alkalines and Ultralife non-rechargeable lithiums), there are certain moments in certain tracks that reliably lead to distortion, using either my (new) K701s or (old) K240Ms. If I use AC power, there's no distortion, and in fact, if I just use the headphone jack of my MacBook Pro with the K701s (there's no point in trying to use it with my K240Ms), I can also get similar volume levels without distortion. At first I thought it was just that my batteries were dying, since I first noticed it after about 4 hours off battery use, but when I swapped out the alkalines for the lithiums, I had the same problem.
If anyone has any info on what I can expect from batteries or what batteries I should be using, that would be great. It's not really a big deal, since I got the MicroStack to use primarily at work at my desk and at home with the Airport Express.
David
P.S. I should also say that it's always a great experience dealing with HeadRoom, and I'd recommend them to anyone. Thanks, guys!
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Thanks for your business & kind comments, FmrAmInAm... and "Sorry About Your Wallet"! (first post Head-Fi greeting)
The battery issue is puzzling... could be the 9-v batteries are not making solid contact at the terminals?.... Just out of curiosity are you hearing the same thing with fresh Duracells too?
I will bring this to Mike's attention (HR Repair Dept Manager) asap and see what comments he's got....
Cheers,
Jorge
HR Sales/Product Manager