The Package

The package that the PRO900s come in is reasonably large package. This is much needed since the headphones themselves are quite large and come with a hefty bundle. As a part of the bundle you get a really nice quality padded carrying case. With the headphones costing around $400 this is definitely something you would want to use in order to protect your investment.


Out from the box emerges a wealth of accessories. With the PRO900 you get a spare set of ear pads and two cable choices: one with a regular straight cable and one that is spiraled up for easier cable management. The pads will eventually need replacing and with a spare set at hand you can enjoy these headphones for a very long time before you need to acquire new ones. As a little teaser you also get an audio test CD with some nicely mastered tracks on it.


Like most high end headphones these include a 1/4" to 1/8" converter so that you can use the headphone with all your sources.

Closer Examination

These headphones look particularly sweet. The black mixed with aluminum finish makes them very pleasing to look at and gives them the right sort of feel that you would expect from a top tier pair of headphones.


Unlike the Ultrasone HFI-680 which we recently reviewed, the new PRO900s have a simpler piece of graphics on the headband. It is still not pretty, but better looking than "Ultrasone" spelled out and written in some odd font.


One of my main concerns with the other Ultrasone designs was the clamping force and wearing comfort. It seems that Ultrasone has realized that they could fix these problems by making small alterations to the design of their high end models. The clamping force is way lower and since the pads are made of velvet rather than leather, your ears can breathe a bit. The ear cups are also quite a bit bigger that those on the HFI-680s and are of a circular design which means it can accommodate all ear sizes.


Ultrasone has made quite an impressive headphone with the PRO900. Every little detail is just so well thought out. The jacks are made by Neutrik which is considered one of the best manufacturers on the market, and like always the build quality is superb. The small jack with the threads is for hooking up the cable to the headphone itself. This is a nice solution, definitely better than the jacks that Sennheiser used on their HD 580/600/650s.


Once you remove the ear pads you can clearly see how the driver plate is screwed on to the ear cups. Removing the pads is done by just a small turn to the right and they un-hook. The Ultrasone designers have also come up with a nice and secure locking mechanism which is impossible to destroy unless you abuse it.


A well implemented feature on the PRO900s is the screw on cable. The small mini-jack type plug with thread on the outside makes it fit nicely. Because it is screwed in there is zero stress on the jack itself.


The two cables cover the basics. Both are of a really nice quality, but the jacket material is quite thick and hence not ideal for portable use. It is also quite long as well, ideally suited for home listening.


Size wise the PRO900s are almost as big as the Sennheiser HD 580s, and are a little bigger than the HFI-680s from Ultrasone.