INTRODUCTION

    Anyone who’s spent time building PCs knows the case sets the tone long before the system ever powers on. It dictates how cables route, how air moves, how easy it is to swap parts, and ultimately how satisfying the whole build process feels. Some cases make you fight them; others quietly get out of the way and let the hardware shine. Over the years, expectations have shifted toward smarter interiors, better thermals, and designs that don’t feel overcomplicated for the sake of it. That’s the environment where Formula V Line introduces the Crystal U9 PA, a new chassis meant to offer a straightforward, modern foundation for a fresh build.

    Formula V Line is a Taiwanese company founded by a group of professionals in 2012. Our main product lines include various computer cases, power supplies and air-cooling systems for computers. Our research and development team can bring your best ideas to life. Formula V Line's mission is to create reliable products with the best price-quality ratio. For more information, visit http://formulav-line.com/

    The Crystal U9 PA continues the series’ dual‑chamber approach, separating the main hardware compartment from the PSU and storage area to keep airflow unobstructed and cable clutter out of sight. It comes with four 120mm Performance ARGB PWM fans pre‑installed and uses curved tempered‑glass panels on the front and side for a clear view of the build. Formula V Line has equipped the U9 PA with removable top and bottom dust filters for easy maintenance. Hardware support is broad, GPUs up to 420mm long, CPU coolers up to 182mm tall, single 360mm on top, and up to E‑ATX size motherboards all fit within the main chamber. Storage is handled by a single 2.5” drive bay, single 3.5” drive mount and as for the PSU chamber, it accommodates standard ATX units. The case is available in black or white, matching the PA variant’s included ARGB fans.

SPECIFICATIONS AND FEATURES

PACKAGING AND CONTENTS

Formula V Line uses a plain cardboard box to ship the Crystal U9 PA the front of which has their logo, product drawing and the main product features.

The specifications table is printed at the rear of the box.

Typically, the case is wrapped inside a plastic bag and placed between two foam spacers.

Along with the Crystal U9 PA inside the box you'll also find 5 cable ties, 3 rubber anti-vibration rings, what seems to be a cable holder, two bags of standoffs and screws and the user manual.

THE CRYSTAL U9 PA EXTERIOR

The Crystal U9 PA stands between midi and full towers measuring 484mm in height, 480mm in length and 235mm in width.

Both the right tempered glass panel and the left steel panel feature clip mechanisms instead of screws.

Formula V Line has placed their logo on the lower left corner of the right side.

The I/O is located on the right lower end and it includes two USB-A ports, USB-C port, 3.5mm headphones/microphone port and the on/off button.

As mentioned in the features list the front is made of curved tempered glass.

Just like the side panels the top is also kept in place with clips so you just have to pull it upwards to reveal the fan/radiator mounting area.

Roughly 1/3rd of the left side panel is perforated.

Moving at the rear we find an 120mm exhaust fan, 7 PCI expansion slots and the PSU area.

The Crystal U9 PA sits on 4 feet and features a removable dust-filter right under the PSU area.

THE CRYSTAL U9 PA INTERIOR

The interior of the Crystal U9 PA is quite spacious and should hold any hardware component.

With three 120mm ARGB fans pushing air towards the left of the case airflow levels should be substantial.

The dual chamber cover features room for two more 120mm fans.

A total of 11 holes are located on the motherboard tray (plus the CPU cutout) and 3 on the dual chamber cover.

Taking a look on the other side, we find a single aluminum 2.5" drive tray, three cable holders, 3.5" drive mount (at the base of the case, next to the PSU area) and the PSU area.

BUILDING THE SYSTEM

As always, the purpose of this section is not to build a functional system but rather to showcase what you can expect from the case at hand in terms of interior space.

Even if you were to mount an 3.5” drive at the front end of the case you’d still have enough room for most (if not all) PSU models in the market today.

With enough room for even E-ATX sized motherboards space inside the Crystal U9 PA is plenty.

You can install CPU air coolers up to 182mm in height so again, this should be enough for any model out there.

Even though you should be able to mount a radiator on the left fan mounting area (which would limit your GPU length) officially you can only mount a single radiator on top (240/360mm).

With room for up to 420mm long graphics cards you should be able to fit anything inside the Crystal U9 PA.

The graphics card support bracket wasn’t implemented properly but it does help.

NOISE LEVEL TEST

After giving it much thought we decided on performing noise tests with each PC Case we receive by placing our ExTech HD600 vertically on top of each case to measure the noise levels emanating from the pre-installed fans at both 50% and 100% with the help of a fan controller (if the case doesn't have one, we use our own).

CONCLUSION

    A case like the Crystal U9 PA ultimately wins you over by how it feels once everything is inside it. The clean glass surfaces give it a sharp, modern look without drifting into anything gaudy, and the dual‑chamber layout keeps the interior looking spacious even when the build is fully populated. With the fans tucked behind the curved front panel and the hardware sitting in a wide, open main chamber, noise levels stay pleasantly low during everyday use. Airflow moves smoothly through the case without the harsh turbulence you get from tighter layouts, and the dust filters do their job quietly in the background. Cable management is another strong point, the hidden chamber, generous routing space and several holders make it easy to keep everything tidy without forcing cables into awkward paths. It’s the kind of chassis that looks tidy from every angle, stays cool without sounding like a wind tunnel, and gives high‑end components room to breathe. For builders who want a clean aesthetic, calm acoustics, and a layout that naturally encourages neat wiring, the U9 PA lands in a very comfortable sweet spot.

    Although I was unable to find the Crystal U9 PA anywhere online (USA/EU) Formula V Line has set an MSRP of around USD80/80Euros and well, if that’s how much it ends up costing it will represent great value for money. Looks, spacious interior, low noise levels and a very attractive price tag, everything checks out for our Golden Award.

PROS

- Overall Build Quality
- Curved Tempered Glass Fascia
- 4 Pre Installed 120mm ARGB Fans (Up To 9)
- 240/360mm Radiator Mount
- Interior Space For 182mm Tall CPU Coolers, 200mm Long PSUs, and 420mm Long Graphics Cards
- Top / Bottom Dust Filters
- Available In Black & White Colors

CONS

- Room For Only 2 Drives
- Current Availability