A Closer Look - Outside

Looking at the Dark Base Pro 900, the chassis is the perfect larger brethren of the 600 series. It features the same color accents and clean design. Just like the smaller variants, the Dark Base Pro 900 is available in three different colors. On top of that, you get your pick of a solid or glass side panel with the orange or black version.


Obviously, we got the one with the see-through side panel, which spans across the entire side. be quiet! has used large thumbscrews to hold the panel in place, which itself rests on rubber rings as an anti-vibration measure. On the other side, you will find a solid panel with the same style of an air duct as we have seen in be quiet! cases before. You may raise this element to allow for airflow to enter this area without it disturbing the enclosure's overall look.


Looking at the closed front, there is not really much to see besides the solid construction with its brushed surface and be quiet! logo on the very bottom. Turning the Dark Base Pro 900 around reveals a traditional layout with a large number of intricacies we will dive into later.


You may flip the large door open to the right by default. Behind it, you will find two 5.25" drive bays and two 140 mm retail-grade fans, which are protected by an easily removable dust filter.


The inner side of the front door is lined with sound-dampening material, and be quiet! has designed the panel so that you may set it up to open to the right if you like. The two external bays are equipped with clips so that you may remove the covers easily. Above those are a fan controller and LED on/off switch.


be quiet! has also protected the underside from dust and grime with a filter, which may be removed by pulling it out through the front of the case. This is great as you will not have to move the enclosure around or tip the case over to reach the filter for cleaning.


In the rear, things may be laid out in quite the traditional fashion, but be quiet! has designed the Dark Base Pro 900 in a modular fashion, so there are a lot of different parts that make up the rear. The one thing you will notice is the lack of a real PSU bay. Instead, it is just the plug, which means that the actual unit resides within the case. Above that, you will find eight expansion slots with individual metal mesh protectors, while another 140 mm fan takes up the rear and is set to push hot air out the back of the case.


In the very top is a flat, angled element where the I/O resides. It consists of the traditional dual USB 3.0, audio in- and outputs and two USB 2.0 connectors. However, the unique aspect in the way of a Qi wireless charger resides in the top. It allows you to charge your cell phone without the use of any wires should your mobile device support this type of power transfer. The top cover is also quite solid, with some metal mesh components on the side and a simple vent in the rear to allow for air to pass through.


Taking a quick peek at the underside of the Dark Base Pro 900, it is completely solid, which is surprising. Once again, the only air vents are the sides and an opening in the rear of the case. be quiet! wants to make sure noise stays encapsulated, but clearly believes that there is still plenty of airflow possible as it would not have embedded a dust filter here otherwise.