You are not the only one. I inadvertently did a 100% blind A/B test of my own. I put together a DAC and amp on my home system so my Mac was simply a transport for my ALAC files. I took the exact same DAC and amp to my office and the only difference was instead of my Mac Pro as transport, my office system is a Macbook Pro laptop. I used a cool utility called Double Twist to sync my iTunes library and playlist to a USB drive so I could plug in to my Macbook.
When I put the system together at work, the sound quality was worse than home. In short, it sounded muffled. I brought the components back home and sound was fine. I thought the problem was that the USB to my DAC at work was through my TB monitor, while at home it was directly from the Mac. So I switched cables, tried optical, different power cords and still no solution. When I inadvertently saw that my 64 GB thumb drive was still 80% free, I then realized that I didn't change the default sync settings on Double Twist and it had compressed all my ALAC to 256 MP3. When I corrected this, sound quality returned to normal. The entire time I tested "B", I was 100% convinced the files were the same. There was no chance of placebo effect.
BTW, the max rate that Double Twist will sync is 16/44 without compression so I had manually copy my music files. This was a while ago so maybe they increased the sampling rate.
That's very interesting. I can't argue the experience. Not wishing to put you on the spot but I wonder if you fancy trying this test. The same song snippets recorded in ten different codecs. Grade them in order of preference and I will PM the guy running the test for the result.
http://www.vintageip.com/test/abbado.m4a
Guys, I am on my way to get my impression redone. I'm bringing a small block to bite on(audiologist doesn't have one), it's 1.5" by 2". Putting it in my mouth at 2" seems uncomfortable an stretching too far, I think i'm gonna go with the 1.5" side. Any thoughts?
Guys, I am on my way to get my impression redone. I'm bringing a small block to bite on(audiologist doesn't have one), it's 1.5" by 2". Putting it in my mouth at 2" seems uncomfortable an stretching too far, I think i'm gonna go with the 1.5" side. Any thoughts?
Yeah, this is what I used as well. Think the smaller side is ~1", and that's what I've always heard is the size to use.
Also make sure they follow the instructions from the Noble site here (be sure to download the PDF file, print and bring with you). As many have stated they can fail to get the impression either deep enough and/or fill the whole outer ear sufficiently.
Enjoy the process and try not to drool on yourself too much! (kind of unavoidable really).
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