It's a bit difficult to criticise these headphones as they were less than twenty quid.
These are my thoughts...
I bought these as a cheap pair of headphones for listening to mp3s and/or videos on a PC without disturbing others in the room. I don't consider myself an audiophile, and just wanted a 'passable' quality.
1) These headphones aren't very sensitive, so it's difficult to get a reasonable listening level. They were just about OK with the volume control on my laptop on max - it doesn't need to be this high for any other headphones I've used with it.;
2) They over-emphasise the bass, and not in a good way - it sounds muffled and woolly (the bass guitar in a song dissolves into a series of thuds) - I tried them on several sources, including a decent CD player and they were the same. You could possibly live with this for the price;
3) Plugged into an amplifier the headphones clip (buzz) at very modest volumes - I don't think I listen to very loud music, but these were incapable of dealing with rock music at a lively volume. This was the killer for me - don't think you can compensate for the low output of these by driving them harder - they just won't take it. I'm not talking about deafening levels here, not even "loud". I also tried them for practising electric guitar, and they were un-usable for this reason.
Plus points are that they did seem well made, were comfortable and isolated the sound from others very well (but they were never very loud for the wearer).
For cheap headphones, they're good, but good headphones they're not.
In fairness to Amazon, they were returned without any hassle. I was more concerned about getting decent quality than an ultra low price, so cut to the chase and bought a pair of Sony MDR V6 instead - Sony MDR V6 - Headphones ( ear-cup )
- bliss :)
It feels a bit harsh to give these 2* - it's more of a reflection on the audio quality than the value for money.
Hope this helps someone...