Pros:Very clear sound, comfortable fit
Cons:Bass response a little light, high impedance, open air design can cause feedback
The Bottom Line: Great set of headphones for the professional or midrange home audiophile.
First off, let me state from the outset: I love these headphones. I got a pair in 1990, and have used them in my professional broadcast career ever since. They are durable, give you GREAT sound, and are the most comfortable cans I've put on my fat head (hat size 8!)
Recommend this product?
The K-240 is a classic design, dating back to 1974 when they were first introduced. Little has changed in the nearly thirty years since they were first introduced.
As stated above, I've used these 'phones for the better part of a dozen years as an air talent and producer for several radio stations. They are great 'phones, but there are some downsides, and a few things to watch out for if you're going to use them in a similar environment.
First, these things are power hogs. Even on professional radio station control boards which usually have dedicated headphone amps, I find I have to turn the volume at least 75% up to hear things at a decent level. These are perhaps the last headphones on the market with a 600 ohm impedance (most 'phones sold today are 1/3 to 1/4 as much, in the 150-200 ohm range). Countless are the times that I've been yelled at by the DJ coming in after me who plugs his or her cans in and gets blown across the room because I forgot to turn the volume back down. :)
Second, the open air design of the K-240 is a blessing and a curse. The curse is I think the design compromises bass response, and more importantly, can cause feedback if used in a radio environment. I have to remember that I can't turn my head left or right while the mic is on, or I'll treat myself and my listeners to feedback.
All things considered though, I still love these headphones. They are unbelieveably comfortable, and have the best fidelity I've heard for any headphone in its price range. (To get better sound, you have to spend a LOT more dough...in the 5 to 6 hundred dollar range.) When I bought these cans from Crutchfield in 1990, they were about $155 plus shipping. At $80-$100 today, they're an even better buy. I'm starting to shop for headphones again, and I'll probably go with this headphones' big brother the K-240 DF.