Summary: I ordered these to replace an ageing budget pair of Klipsch in ear earphones, mainly for outdoor use etc. I have other headphones for indoor use. The good:- Well made, neat folding with smart case, high sensitivity so plenty of volume with mobile devices, fairly comfortable and look cool.
Summary: Compact and decent build quality. Nice of them to include a spare cable too. However the sound is far too bass-centric and there's no balance at all - to hear the mid range you have to crank the volume, and then the bass overpowers everything, making them tiring to listen to.
Excerpt: First impressions I have owned so many different types of headphones down the years and up until recently I thought I had found what I liked in the shape of those earphones that go into your ears and are both comfortable and great at blocking external sound out.
Not bad but too bass heavy and uncomfortable for me
2 April 2015
Summary: These came highly recommended by a friend and I tried them for a couple of days but had to return them. Sound quality - for my music tastes (Rock to rap to blues to classical to soundtracks etc), I found these a little too bass-heavy with not enough clarity in the trebles.
Summary: I purchased this pair of headphones after my Sennheiser HD 202 stopped working recently. The Sennheiser HD 202 was slightly cheaper than the AKG K451. Since the AKG K451 was priced at a little more, I believed that it should have more to offer.
Warm and safe sound for portable use and long listening periods.
João Soares, Amazon
30 August 2014
Summary: Warm and safe sound but a little muffled and muddy. I guess it's not the best around, but as a package is a nice portable product and sound is ok. Also very, very easy to drive. I would say it's a design that makes sense for portable use and long listening periods.
Summary: Had a pair of Soundmagic E10's that broke after two years of use. Thought moving to AKG K451's would be a significant upgrade. Returned them and bought another pair of E10's. Richer Sounds could not have been more accommodating though. One of my favourite companies to deal with.
Summary: The sound quality on these headphones is very good, especially for the price. I think as such these are some of the best value headphones you can get and they are well designed. They feel solid too so I would expect them to last well.
OK, but a little disappointed (UPDATE - more disappointed!)
MR D P POPE, Amazon
4 July 2014
Summary: I'm not really sure what all the fuss is about. These headphones are built nicely, come with a very nice travel case, and have a few cables which is useful. I have been using B&W C5 in ear headphones which do sound amazing but make my ears ache after a few hours.
Summary: A truly stunning set of headphones with an experience marred by some poor customer service. One set of cables was not working so I filled in a form on the AKG website. I was informed via email that I had written to the wrong department and was given an email address to contact.