Sennheiser Genuine Adapter Cable Female 1/4 6.3mm to Male 1/8 3.5mm Plug for Headphones

I use this to connect my headphones to my desktop computer, my Kindle fire, and my cell phone

Much safer than the adapter that came with my 599. Less likely to break

Works as described

You get excellent quality with this product both physically as sonically. Quite expensive, but no compromises.

Does what I expected. Fits nicely between the Kann and Fostex cans.

Most of the time, Ive found OEM products a little more expensive than clones, but usually a worthwhile proposition in quality and functionality. I have some Sennheiser 650 headphones, which cant be used with a MacBook Pro or portable media device or even most portable headphone amps without an adaptor. This adapter seems well made and I expect it will last a long time. Nothing high-tech going on here. Just a simple adapter that I can buy once and not need to think about again.

Great Quality

keeps sound quality!

This thing is heavy and gold plated. It works perfectly as described. I rarely need to go from 4.4mm to 3.5mm but its a good thing to have around for when I want to do some mobile listening on my hifi headphones.

Well made, works great, was just what I needed but couldnt find elsewhere. Arrived quickly and the price was fair. Very happy :-)