Hello fellow eBayers and Sennheiser fans-

We have worked hard to get you great sounding audio products. Please take a few moments to read this guide so that your hard-earned money is spent on a genuine, quality Sennheiser product. If you see a Sennheiser product way below average market price that seems too good to be true, it is.

If you have any questions, contact me at SENNHEISER!!

epalonen ->use the "at" symbol<- sennheiserusa -> "period or dot"<- com, +1 877-736-6434

Here are some rules for the CX300 as well as PX100, PX200 and MX500, but are generally applicable to most Sennheiser products.

-The CX300 never ships directly from the factory or the far east. It will ALWAYS ship from a Sennheiser warehouse to a dealer's warehouse, then to the customer. Even if it comes from some guy's house in Milwaukee, it's still an issue, so buyer beware. ANYTHING ELSE IS NOT A SENNHEISER!

-The CX300 is not OEM'd by Sennheiser. ...therefore ANYTHING ELSE IS NOT A SENNHEISER!

-The sale of a fake CX300 hurts the economy...you are taking money out of a genuine dealer's hand, and possibly away from their family. Support real dealers!

-The sale of a fake CX300 could support terrorism. You have no idea where this money goes, or what it supports.

-Fake Sennheiser products insult you, Sennheiser and eBay. These folks are attempting to ruin the spirit of eBay and the integrity of a trusted name brand.

-The CX300 will always ship in a Sennheiser package, not an OEM bag (see above). ANYTHING ELSE IS NOT A SENNHEISER!

-Sennheiser will not honor the warranty on a fake CX300. ANYTHING ELSE IS NOT A SENNHEISER!

-Fake CX300 sound terrible. Real CX300 sound great. ANYTHING ELSE IS NOT A SENNHEISER!

-Real CX300 have an asymetrical cable with silver pin at a right angle. ANYTHING ELSE IS NOT A SENNHEISER!

-The further the CX300 strays from the retail price, the more likely it is that it is fake. MSRP $89.95 USD. Only buy CX300 from an authorized dealer. ANYTHING ELSE IS NOT A SENNHEISER!

-Check the actual feedback, not the feedback rating. Beware of new sellers and copied, forged, or shady looking feedback. ANYTHING ELSE IS NOT A SENNHEISER!

-Bogus sellers claim they have genuine CX300, or even say it in the item description/title. They are lying! They will offer you money back if it is fake...should they even have to make that promise?! They are hoping that your money and time (and intelligence) is not worth it. They don't care about your hard-earned money. We at Sennheiser do. These bogus sellers do not care about you and are trying to fool you. They take your intelligence and throw it out the window. Don't let them get the best of you! ANYTHING ELSE IS NOT A SENNHEISER!

-REPORT THE AUCTION TO SENNHEISER IF SUSPICIOUS! epalonen ->use the "at" symbol<- sennheiserusa -> "period or dot"<- com, +1 877-736-6434ANYTHING ELSE IS NOT A SENNHEISER!

-eBay is a terrible place to get CX300, unless from an authorized dealer. Their price will be higher, but you get the real thing with a supporting warranty. If you want the sound quality of a CX300, why purchase an inferior copy with no support behind it? ANYTHING ELSE IS NOT A SENNHEISER!

This is also from Sennheiser's corporate HQ:

It appears to me that I bought a fake Sennheiser product. Is that at all possible?

Well-known brands in all industries worldwide have to face that counterfeits of their products increasingly appear on internet auction sites. Also the Sennheiser brand is illegally used on such platforms increasingly. Counterfeiters profit to a very large extent from copying successful products with a well-known brand without investing time and money in the development and marketing of such product. In order to protect you as a consumer from counterfeits, to avoid deception and to sustain the image of the Sennheiser trademark we watch sellers of Sennheiser products on online platforms and take legal action against infringements. Besides patents and design patents we also protected our trademark and our logo on an international level. 
 
  What is Sennheiser doing concretely?
We contact the owner of the internet auction platform and ask him to delete the offer or block the seller in order to prevent further selling. In case of repeatedly selling of counterfeits we ask our external lawyers to take legal actions against the seller including cost burden for him. In Far East where nearly all counterfeits come from, we carry out raids in order to diminish the number of counterfeits which could be sold in other parts of the world like Europe and USA. 
 
  What are criteria which help to spot a fake?
Unfortunately there is no hard and fast rule. The skills of the counterfeiters can often make it hard to visually distinguish a counterfeit from the original product. You should be alarmed if the products are being offered at an extraordinary low price or if the location of the article is in Far East because Sennheiser-products are not shipped to the customer from Far East! Since a very big percentage of consumer goods being offered on online-auction platforms are counterfeits, you cannot be sure that Sennheiser products being advertised as "new" are originals. We strongly recommend to only purchase our products from authorized Sennheiser distributors which you can find on this website. 
 
  What is the consequence of having purchased a counterfeit Sennheiser product?
Please note that the purchase of counterfeits is causing loss of jobs in Europe and other parts of the world. In the event you have bought a counterfeit please return it to the seller and demand a refund. Counterfeits are mostly of a very bad quality so that you didn't buy the quality Sennheiser stands and is famous for. If the counterfeit is returned under warranty to us we cannot service the product.

You can find our authorized dealers under "Sales worldwide" and the respective country on this website. 

Sennheiser USA is an open door for your questions. Take the few moments to write or call us and confirm....we can tell you if they are an authorized dealer or not.

Always buy your CX300 from an authorized dealer!!! If its too good to be true, it is!