What in a headphone amp/dac can die over a long time?
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Old 26-04-2016, 03:05 PM   #1
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What in a headphone amp/dac can die over a long time?

Im about to buy a O2/ODAC from someone online that has owned it for 3 years and I think it was previously owned before that. Just wondering what part of it might die soon and if it's okay to buy it so I don't have to end up replacing a part inside of it.

cheers

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Old 26-04-2016, 04:00 PM   #2
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Re: What in a headphone amp/dac can die over a long time?

I have yet to see an amp/dac die from old age, I have some stuff (amps) from the late 60s/early 70s that was taken horrible care of and the right channel is intermittent. I think your main worry is going to be the jacks and knobs as those are under the most external stress (especially if someone carried it around in their pocket, bit of a stretch with the O2, but possible). Modern stuff should last at least 5 years if it's taken decent care of and playing 10 hours a day or something crazy high like that (longer for less time every day), so I think you're fine as long as all the jacks and knobs are in good shape.
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Old 05-09-2016, 02:36 PM   #3
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Re: What in a headphone amp/dac can die over a long time?

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Originally Posted by Dimension View Post
Im about to buy a O2/ODAC from someone online that has owned it for 3 years and I think it was previously owned before that. Just wondering what part of it might die soon and if it's okay to buy it so I don't have to end up replacing a part inside of it.

cheers

it's not a bad thing if you will buy what you want online and is already owned and used before. but for 3 years of owning it and using it? i think that is not a good one. you have to buy a newer one to make sure that there is no issues attached on the item. just my thought!
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Old 05-09-2016, 03:00 PM   #4
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Re: What in a headphone amp/dac can die over a long time?

Aside from a build-up of dust inside the unit, which might lead to some issues over time, the only other real thing that comes to mind is the pots might need replacing..or just cleaning, if you're lucky.

Other than that, and if the seller hasn't listed any defects, then I'd say go for it, if the price is right, once you factor in the cost of any needed repairs, if any.

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Old 05-09-2016, 05:15 PM   #5
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Re: What in a headphone amp/dac can die over a long time?

In practice: From 3 years? Nothing, really. I'd expect at least 20 years more before any real defects from a headphone amp at that price bracket.

In theory: Potentiometers are usually cleared for a certain amount of turns, and due to being mechanical units, they will die eventually. Unless you spin them wildly, 3 years is nothing though. Same thing with jacks. Really not a concern. Beyond that, capacitors - especially electrolytic ones - can blow up due to age. Again, 3 years is nothing and most relatively modern designs have ones graded for forever. Mostly a concern in "planned malfunction" TVs. I suppose power source could screw up or something.

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