Customer Rating: 
Summary: In-Line Unlike Others
Comment: I was disappointed by this purchase. Unlike a regular inline volume controller that integrated with a pair of headphones, this does not amplify the sound coming from the device.
So if the device has a poor sound and volume range, this does nothing to improve it.
If I could return it I would.
Customer Rating:
Summary: Outstanding addition to my Bose Headphones
Comment: I use this devise to control the volume to my Bose Headphones. Its only drawback is that I would like it to have a mute button.
Customer Rating:
Summary: I lost mine and was lost without it
Comment: This is something you probably won't fully appreciate until you've had one for a while and then lose it. You may not need a headphone extension cord with an inline volume control. But once you get used to having one, you'll find the convenience and functionality are habit forming. The one I lost was in daily use for 3 or 4 years and continued to work well.
Customer Rating:
Summary: Convenient, but...
Comment: It's definately a nice item to have... at first. I got mine so that I could use it with my computer, and be able to change the sound level without going through menus and unplug the headphones easily without having to crawl behing the computer, so that I could use them with my stereo. It worked great for about 3 months, however, it's wearing out - the headphone port has broken loose in the casing, and I have to fidget with it for a minute to get the plug all the way in (otherwise, sound only comes out one side). Due to the way it's constructed, the dial for the volume will keep it from getting any worse, so I'll still be able to use it, but it sure is annoying when I'm trying to move between things.
Customer Rating:
Summary: Nice, very useful
Comment: I use this on my computer. Yeah, there's software volume controls - but they require dropping out of whatever you're doing to set, and differ from program to program. It's far more convenient to be able to reach over and make a little adjustment without effecting what you're working on. Also, the sound quality isn't effected - I used to plug my headphones into a set of speakers to do the same thing, but it resulted in static and noise that degraded the music; this volume control retains the clarity of the music.
Summary: In-Line Unlike Others
Comment: I was disappointed by this purchase. Unlike a regular inline volume controller that integrated with a pair of headphones, this does not amplify the sound coming from the device.
So if the device has a poor sound and volume range, this does nothing to improve it.
If I could return it I would.
Customer Rating:
Summary: Outstanding addition to my Bose Headphones
Comment: I use this devise to control the volume to my Bose Headphones. Its only drawback is that I would like it to have a mute button.
Customer Rating:
Summary: I lost mine and was lost without it
Comment: This is something you probably won't fully appreciate until you've had one for a while and then lose it. You may not need a headphone extension cord with an inline volume control. But once you get used to having one, you'll find the convenience and functionality are habit forming. The one I lost was in daily use for 3 or 4 years and continued to work well.
Customer Rating:
Summary: Convenient, but...
Comment: It's definately a nice item to have... at first. I got mine so that I could use it with my computer, and be able to change the sound level without going through menus and unplug the headphones easily without having to crawl behing the computer, so that I could use them with my stereo. It worked great for about 3 months, however, it's wearing out - the headphone port has broken loose in the casing, and I have to fidget with it for a minute to get the plug all the way in (otherwise, sound only comes out one side). Due to the way it's constructed, the dial for the volume will keep it from getting any worse, so I'll still be able to use it, but it sure is annoying when I'm trying to move between things.
Customer Rating:
Summary: Nice, very useful
Comment: I use this on my computer. Yeah, there's software volume controls - but they require dropping out of whatever you're doing to set, and differ from program to program. It's far more convenient to be able to reach over and make a little adjustment without effecting what you're working on. Also, the sound quality isn't effected - I used to plug my headphones into a set of speakers to do the same thing, but it resulted in static and noise that degraded the music; this volume control retains the clarity of the music.