I bought this amp as I was searching for something small to run a pair of small bookshelf speakers for a desktop PC setup. Ran across the 2020+ and thought wow how good could a $25 amp sound, right?
Well, I ate my thoughts once I got it hooked to my small Polk's. At low to medium volume the little amp can provide pleasing power and the best part is if you have a pair of small speakers sitting around or you buy a pair for say $50 or less. You'll have a way better sounding small system then any Bose or PC speaker system out there. besides the Audiengine systems or more expensive setups. But for a investment of less then $100 especially if you already have speakers. You can have a decent small system, that probably cannot fill a large room with loud audio. But certainly a office, bedroom, or other smaller room with good volume. The big question mark with a T amp is that it runs out of steam when pushed in a hurry. I also find  Bass not so solid, and treble seems a bit brash on some music. Hardly
annoying enough to condemn a amp at $200 let alone $25. As with the rest who reviewed this, I concur that for the money its almost a no brainer to just buy one and play with it.

OK first off I had bought a pair of original Hesh headphones which were dreadfully bad sounding. They broke early and so I decided to make SkullCandy warranty them. Well they replaced mine with the Hesh 2's which were not any better sounding in my opinion. When you wearing them if you move at all you hear cracking noises from the lousy construction. They can get very uncomfortable too. Here is the problem today with many of these headphone designs. Its more about design then anything else. I guess if you use them for a play by play at a game or auto race or just as a laptop headphone they work alright. But music forget it. Sorry but SkullCandy as much as they say they are concerned about music and sound quality. I think they are all about style and marketing that to young people.
But I am sure most concerned about sound quality will already know that SkullCandy is not for them. I would never recommend them to anyone expect someone looking for basic passive noise reduction and vocal and or video media sound reproduction.

OK I have not had these only a few days. But my first impressions are cheap, OK sound quality, worthless noise reduction and about what to expect for $40.00 headphones.
I like the sound, its not breathtaking by any stretch but its OK for a laptop or iPod. The construction is nice for travel. The ability to fold them up is nice. But the plastic does not impress me as being something that will last getting tossed around.
The noise reduction is a joke, when I first turned them on I instantly heard a hissing sound. Very faint but pronounced with no content playing. I tried several different types of music and was happy with the sound but as for reducing background noise. I could not tell any difference with the reduction on or off. Actually the design of the headphones reduces noise passively very well. I also felt the headphones were a bit on the quiet side having to raise volumes to max on my laptop. Could be just a miss match with my laptop.
I am not disappointed but not thrilled with these, Maybe noise reduction is better with low frequency noise like on a train or airplane. Sony has a disclaimer on that. Saying higher frequency noise like talking will not be affected as much. If your really into noise reduction my advice is look elsewhere. If you need a step up for portable music player. Then I recommend them.

So I consider myself a audiophile of old. I grew up on music being important. I liked slow cut Albums and speakers with emphasis on being flat and not bass heavy. That said, I have used mostly headphones from Sennheiser for my listening. Having just bought a iPod Nano 6G I wanted a more isolated choice for listening. I decided to try a pair of Hesh 2's. I found them to be comfortable except if you wear glasses. I also found they are pretty efficient as the iPad Nano had no problem driving them to higher levels. But their were some drawbacks. Such as weak treble, muddy bass and distant midrange with vocals. They did not always sound this way with all music. So I can assume without some technical testing that the Hesh 2's must have some quirky drops in response at certain octaves. In the end they are a step up from those $15 ones people buy and are never happy with. But they won't replace a really good pair of Grado's or Sennheiser's. If you like bass you'll like these, if you crave treble I think you should pass.