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Product Description
In 2011, audio engineer NwAvGuy published a blog post titled “O2 Headphone Amp,” in which he outlined his philosophy on defining sound quality and detailed his ideal audiophile circuit design. Our version of NwAvGuy's famous O2 amplifier, the Objective 2 Desktop Edition features updates based on feedback from the community Read More
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I used this for 4 years and it worked fantastically. No complaints at all. I just needed to be careful because my Senheisser HD600 cord would get snagged and tug on it. It made the jack loose but overall it still works great.
I mean, they've could've just added a free one, was so happy when I got it and then couldn't use because I was missing an RCA into JACK cable to use on my PC. Quality wise it's good. Don't know if it's just mine but I do hear a pop noise from time to time.
Overall i would say this was a good amp it lasted as long as my hd 6xx headphones did about 2-3 years. I do have positive and negative experiences with this amp due to the loud popping noise it would emit. Never could figure out what the problem was. I also felt like i was cleaning corrosion off of my battery terminals on every 9v swap. But I give it 3 stars still because it was a good amp when it worked producing a quality audiophile for my Sennheiser hd6xx's. I would not be able to recommend this product because of only having owned 1 of these and my experience based off reviews I've read may have been a fluke.
These supply more than enough power for my cans, however I do not recommend buying these at $95 as I believe there are better alternatives at similar prices such as the Atom amp. However I bought these on sale for around $50 and at that price these are a steal.
Super powerful amp. More than enough for any pair of headphones. As the title says, this can drive an HE6se, and on low gain.
Taking a star off because it's almost too powerful. If you wear IEMs or more efficient headphones, or your DAC doesn't have volume control, either go for the medium gain version or pair it with a Schiit SYS.
But if you're into planars and studio cans, this is great. It sounds clear, it's super powerful, and it's smaller than a Magni.