Are the same as the headphone HW251/A ? What it means /A and what it means /VT HEADSET ?
2018886
Well all I can tell you is the "a" is a designation for the amplifier control box. Not sure about "vt" other than videtech. Can't find anything or anyone to explain that one. Hope it helps. If it has a quick disconnect then you shouldn't need the control amplifier and just use the p10 connector.
426820
I bought this battery for an AVAYA AWH-55. This headset was manufactured by Plantronics, but is discontinued: http://www.plantronics.com/us/product/awh-55-usb&skuId;=sku4620015Open your headset and get the number off of the battery. Search Amazon for that number.
263254
As far as I know the main differences are found in the headband, cups and ear pads. It's often said that they all use the same drivers are the same, but I can't be sure.
1160164
I can't say if they are original as I have already deployed them. I can tell you they will work on a Cisco 7961, 7965 and 7971 series VOIP phones with the Plantronics HW251N headsets. Hope that helps.
1905704
No clue. The seller contacted me a few days ago and said that they had received a bad batch of headsets. They are sending me a replacement and refunded my money. If the new ones work, I'll be updating my review.
856999
It is basically the same headphones in different color. No tech improvements. Same exact headphones.
2256226
Thanks a million for your kind guidance about this headphone being sold by merchants other than Amazon. Now, I shall place my order with one of them, and thanks to you I shall rest assured that they are genuine Sennheiser, and not imitations. Thanks for giving up your precious time to enlighten us customers of Amazon. Much appreciated. May God Almighty bless you,
559397
What I purchased was solely one a replacement headset; this is a question for the seller if item the description isn't definitive.
2032969
I have no idea. I didn't keep them long enough to learn anything like that, I switched to another brand of headphones. That was another thing that really bothered me about them, the manual/documentation is horrible and I could not find any info online for help.
2067593
Not sure, but it wouldn't matter to me now if it did. This cable is of such inferior quality I wouldn't spend the money on it. I bought the headset, which comes with the regular cable and this one; quality of the materials and durability could not be farther apart. Standard set are up to what you'd expect from Shure. This one? I'd expect it on some off brand, "value" priced model. If I'd have bought the headset and only received the standard cable, my opinion of the overall experience would be completely different. As it stands, to buy that headset for $150 including both cables it paying for a piece of junk, and that's what this cable is. Problem is, it'll probably make it through the first 30 days, so your return to Amazon can't happen and you have to deal with these guys directly.
1343947
Mine says H/W Ver.:A1. I would also say not to waste your time on this adapter and just buy a better newer one anyway.
163473
I have not listened the K702, K712 and Q701, but with a lot of feed back from Chinese headphone forum, the result should like : K702>K712=K612>Q701, for your reference.
1428438
I purchased this to go with a Plantronics H251N SupraPlus NC Headset on our Zultys (AAstra) VoIP phones and it worked perfectly. To be honest I didn't pay much attention to the true part number, but the one I got worked on my US phone.
1382622
There is no difference this is exactly the same headphones. What you are seeing is an advertisement placed by a different seller AV something. You will see this from time to time Amazon allows different sellers to take ads out for the same product. They do this in hopes that you will buy it from their site versus the other sites that already have the product listed. Sometimes they change the price but they have to change the title otherwise it would not come up when you search for the Shure's you would just get the main site and there's would be missed. You also have to be careful there are some knockoffs that Amazon doesn't catch right away sometimes you will buy a phony product before Amazon figures it out and pulls the page. Look at the sales rank for the seller if they have a lot of sales that tells you they're pretty safe and reliable.I do not think that is the case here I think this is just a reseller who wants to get in on the game with the legitimate Shure product. Hope that answers your question. Ray
2246859
I have both sets of headphones and they look a little different but seem to work and sound exactly the same.
1752363
When I sent in my px100 original for RMA at Sennheiser USA (Old Lyme, CT I think), one of the higher reps told me there's no difference except the -II looks better and is supposedly more durable. I sold the PX100-II's right after I recieved them and I miss them alot, as stupid as it sounds. Oh well, I'm using the Grado SR325's now!
920665
They are both 250 ohms. The one that says 32ohms is simply a mislabel. I spoke with live chat. If you order the one for $181 you are getting a 250 ohm headset.