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4 comments about Koss JR900 Cordless Stereo Headphones.

1. Koss JR900 Cordless Stereo Headphones are the best in cordless. I've shopped around in many stores looking for such a bargain. I can't find one. The average price was 500.00. These headphones can work throughout my whole house! I just plug them into my computer and listen to MP3's while I clean. There great and very comfortable. I will encourage everyone to buy these well made Headphones.



2. Listening to classical CDs throughout the house was my goal in purchasing these cordless headphones. General reception is pretty good, although it does fade in and out somewhat as I move through the house. Most annoying, however, is a constant background hiss, which distracts from the high quality sound I hoped for.

   Your satisfaction with this product will probably depend on your listening preferences. Most radios stations and many pop-type CDs would come through just fine. Discriminating lovers of more quiet music will not be satisfied.




3. If you like quiet music or wish to be mobile then these are definitely not for you.

   Unless the volume reaches a certain level, then there is just too much hiss. To drown out the hiss you either need to increase the volume sufficiently that you cannot hear anything else in the room (that's not very high since these are closed earphones), or play different music.

   Even when you are within 2 meters of the transmitter, moving your head just a couple of inches can result in signal break-up.

   If you are prepared to sit still and listen to rock music at the right volume then the sound quality really is quite good. However for over $200 more flexibility is expected both in terms of mobility and clearity.

   In mono the hiss goes away, as does the signal breakup (within 10 meters). However, you are paying for stereo headphones.

   The batteries don't last long (maybe 4 hours) and to recharge them you must connect a cable between the headphones and the base unit and push a switch on the base. With some other makes you only need sit them on a stand. Also the batteries cannot easily be swapped. So if you want to listen for 6 hours, or you forgot to charge them, you'll just have to wait until they are recharged. You cannot just insert a new battery.

   They are a bit on the heavy side.

   Something I do like is that there is no tuning dial for the radio signal, so cannot accidently detune them.




4. Ok lets face it, wireless headphones certainly haven't been perfected yet and any wireless headphones that operate on radio frequency (like these headphones) are going to have some kind of hissing and reception noise but I expected a little more at this price from Koss considering they're suppose to be state of the art in headphones! For Koss to have the balls to ask $300.00 (at Koss.com $400.00) is totally ridiculous! These wireless headphones are no better than wireless headphones that cost anywhere between $50.00 - $100.00. The sound quality is a little better than cheaper wireless headphones but what sinks these is the reception. I don't recommend these for this price, it's a total rip off! The only benefit to owning these is the lifetime warranty.

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1 comments about Panasonic RP-HS103 Clip-On Headphones with Carrying Case.

1. I have had two pairs of these headphones, not because they broke but I lost them. I use these running...they stay on and have great sound and I love the retractable cord! you tug the earphones and the wire retracts, put the plug
   into a little jack on the headphone and the cord winds up. I get stares at my gym from people looking to see what brand i have because well..they are cool. I would never ever go back to the basic cord style! Also the plastic around the ear is comfortable!

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No comments about Apple iPod Nano 3rd Generation Premium Noise-Canceling Ear Buds by Radius Japan - Metalic Blue.

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3 comments about Coby CV790 Pro Studio Monitor Stereo HP.

1. these head phones give off good sound, but they're not durable, i've brought two pairs of these headphones the first pair, the right ear stopped working, and the 2nd pair was same model, but the prong piece was different, it was a very stupid design, but anyway, that part had wires that was easily exposed, so they got damaged quick. Other than that, they sounded good, and they lasted for a good while



2. COMFORT:
   When I first put on the headphones, I noticed that the ear cushions were too small to seal over my ears (I have normal size ears). The inside diameter of the ear cushions are too small (about 2 inches), and they're too thin, so that my ear presses against the inside of the headphones. Part of my ear rested on the outside ear cushion and the other rested against the hard plastic behind a thin cloth pad on the inside of the headphones. I couldn't wear these more than a few hours without my ears getting sore. These are uncomfortable headphones.
   
   SOUND QUALITY:
   Lacking in bass volume, and a bright spot in the treble. Other than that, they sound very clear.
   
   TREBLE:
   When first playing some music that I know the sound of very well, I noticed that the treble was very clear, except for some brightness. After testing it on my computer with a frequency generator, I found the sound to be pretty much completely flat, except for a bright spot around 2.5kHz. This was caused by the natural resonance of the drivers. This was the only bad spot in the treble. There was no noticeable resonance at 7kHz, the natural resonance of the length of the ear canal. These would be the clearest sounding headphones if the bright spot at 2.5kHz is equalized out, just a simple resonance of the drivers is all it is, simple to equalize.
   
   BASS:
   The bass was there, all the way to 30Hz, even 20Hz. The bass was pretty much flat, but not loud enough. If tested by frequency response, the bass would measure the same volume as the treble, but not sound good to the ear. These headphones could use a little bit of a bass boost. When the headphones are pressed to the ears, the bass gets a bit louder like you'd want it to sound, but since the cushions don't completely seal over the ears, the bass is lacking. I even took some big ear cushions from a different pair of closed-ear headphones and put them on these, making an air-tight seal, but even that didn't make the bass sound any better, and it even made the treble sound worse, so I took them off. The size and design of the ear cushions is just not right. These headphones don't have any bass ports on the inside, that's why they lack bass volume.
   
   OTHER:
   Every time I put these headphones on, one side sounded different than the other. This was confirmed be switching sides, it wasn't because of the music. Must have been a manufacturing flaw. The advertised sensitivity is stated as 115dB@1kHz. When I compared the relative volume to other headphones which had a 102dB sensitivity, the sounded about the same, they didn't sound like they had a 115dB sensitivity. These don't block outside noise well at all. The power rating for these headphones is not stated on the package but the drivers being 50mm (2 inches) they should be able to handle at least 1000mW.
   
   OVERALL RATING:
   +3 for the clear flat sound,
   -1 because they're uncomfortable,
   -1 because of the bright spot in the treble, and
   -1 for the lack of bass.
   
   The good: Mostly flat frequency response. Crystal clear detailed treble.
   The bad: Uncomfortable fit, bright spot in the treble, lack of bass volume.
   
   Not recommended for professionals. Maybe ok for anyone else.
   These headphones are not so bad that they're unusable, they just don't work good as professional headphones (unless you equalize them).
   I don't recommend these headphones to anyone, unless you equalize them, then they'll be the clearest headphones you ever heard. Equalize the treble and the bass.



3. Bought and used these for a little while until the device where the power cord connects into your cd player/ipod etc came apart. Very poor wiring and not made to last. It has a little plastic cover over the the connection device and came apart very quickly with just a little jostling.

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