AKG K 420 Foldable Mini Headphone - Blue

General Information

When you want to take your personal listening expereince to the next level, AKG K 420 mini on-ear headphones let you do this comfortably and affordably. Deisgned to deliver true AKG performance - high-output sound and excellent frequency response - from virtually any portable device, including iPhone, they are the "next level" upgrade to an improved personal listening experience. By using a semi-open deisgn that fits comfortably on the ear, the K 420s deliver rich, detailed sound that is free of distortion, even at high listening levels. AKG has even made tucking these headphones away very easy as the patented 3D-Axis folding mechanism allows you put these heaphones in a carrying pouch no heaphones this size should be able to fit in to. An attractive blue finish completes the expereience as their lightweight, comfortable fit makes them the perfect companion for everyday use. A protective carrying pouch is even included to keep your headphones safe and secure when not in use.

Latest reviews

Pros: High sensitivity, very efficient. No external amp needed for use with phone or computer. Sound great. They sound better than most other small cans that I have tried. Deep low end, with a great transient response. Kick drum has a full sound, with great attack. Reproduces extreme lows, without getting muddy. Great if you are on the go, and want to hear the outside world while listening to music, such as riding a bicycle.
Cons: Mild low end rise in frequency response. But not boom-boom cans, like beats, etc. Also mild high frequency rise in high frequency response, but not harsh, except at very loud SPL listening levels.
The AKG K420 headphones sound nice. They are great if you want, or need high fidelity, semi-open, portable phones. I hate closed phones. The K420(s) sound like my AKG K240 MKII(s), if I were to boost the lows & highs on them a little bit The lows are deep and tight on the 420s. Kick drum and floor toms sound great! The highs are nice, except at very loud SPL listening levels, where at that point, they get a little harsh I use the 420s, for portable use, at mostly low to mid SPL listening levels. At low volume, upright bass sounds great, losing "some" definition at louder SPLs. At lower volume levels, The mild rise in the Hi and Low end frequency response is nice, ...sort of like hitting the "loudness button" on an old stereo, to compensate for the Fletcher-Munson curves of human hearing response at low SPL(s). A lot of listeners, would love them at loud sound levels.
When I go loud, at home, my go-to, is my K240MKII(s)
At home, I also listen to K240 sextetts and Sennheiser HD 414s.
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Pros: It is cheap and has a very good sound quality for the price. The mids and highs are excelent.
Cons: Very poor ear pad quality. Lacking bass on some recordings.
This headphone has a quite good sound quality for its price. Its sound is very clear, the mids and highs are well detailled. The bass is tight but some recordings sound lacking bass. It needed a little bit more body and warmish on the sound. The ear pads have a bad quality. The pads from mine has last about 8 months. 
Pros: Great sound for <100USD , good bass
Cons: Not very sustainable
After a thorough market research and reading the good reviews on this website, I decided to buy the AKG K420 headphone about a year ago. It seemed perfect for my needs: low price, good sound quality, very portable and rather bad sound isolation, which I need so that I can hear the cars when riding my bike. As always, I bought it second hand because you usually get much better deals buying second hand; I still cannot believe the kind of great stuff I got for incredibly cheap prices.

 

So I got the headphone. They looked as new and they sounded as I hoped, no disappointment there! I've been using them every day, riding my bike to work and taking them with me almost everywhere I go. Unfortunately, after a few months, the left speaker started falling out every now and and died in the span of a few hours. I don't know much or anything about repairing headphones, which was confirmed in my attempt at saving them. I figured it might be due to abusive use by the previous owner so decided to buy another AKG K420 headphone, but this time a new pair. Unfortunately, after a few months, the exact same thing happened: the left speaker died on me again.

 

Taking them everywhere, I might not be the perfect headphones-host but I'm certainly not the worst and I've had cheaper headphones lasting for years. As this happened to me twice, I'm thinking this is not an isolated incident and felt like I had to create a profile to let the world know that the shelf life of these headphones is questionable, especially if you like to move them around.

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