Featured image of 2019 Phrozen Shuffle 4K LCD 3D Printer – Review the Specs
*Shuffle Intensifies*

2019 Phrozen Shuffle 4K LCD 3D Printer – Review the Specs

Picture of Matthew Mensley
by Matthew Mensley
Jul 30, 2019
Table of Contents

The Phrozen Shuffle 4K is a high-resolution LCD 3D printer that improves several things about the original Phrozen Shuffle. Read on as we review the specs.

Did you hear that? The faint thud of a starting gun, somewhere in the distance. A race has begun — the race to push LCD-based resin 3D printing further into the murky waters of opaque specifications, my-number’s-bigger-than-yoursisms and imperceptible jumps in quality.

Early off the blocks is Phrozen, with its stealthily released Shuffle 4K. Though the name hints at a modest update of the Phrozen Shuffle, the Phrozen Shuffle 4K is in actuality a completely overhauled and new LCD 3D printer.

There are very few 4K LCD 3D printers on the market today — we suspect due to those that came before simply not being all that good. We’ve used Phrozen’s Shuffle and liked it, so to see them release in spec-bumped version — despite our cynicism above — genuinely interests us.

Jumping to a 4K panel inside the Shuffle 4K bumps the X/Y resolution from 47-microns to 31-microns. That may not sound like much and might be undetectable to the naked eye, but such fine margins could be the key to standing apart in an increasingly competitive desktop resin marketplace.

Join us, as we take a look at the specs for a little speculation (ha) and examine what’s new in the Phrozen Shuffle 4K.

Phrozen Shuffle 4K

Product image of Phrozen Shuffle 4K

Phrozen Shuffle 4K – Review the Specs Features

Image of Phrozen Shuffle 4K – Review the Specs: Features

From the outside, you’d be hard pushed to spot the difference between the Phrozen Shuffle and Phrozen Shuffle 4K. While the name change tells you the main new selling point of the new machine, there are several other improvements to be found.

But first, let’s address the biggie – the inclusion of a 5.5inch 4K screen.

Improved Resolution

The majority of LCD based printers in this size and price range use 2K screens (with 2560 x 1440 pixels). This means that the masking grid of pixels above the resin-setting UV light source technically has an X/Y pixel size of 47 microns. It is theoretically possible to achieve features as small as 0.047 mm.

It should be noted that this level of accuracy relies on the perfect setting for the right resin under the right conditions, but on a specs sheet, it gives a handy indicator of possible resolution on a given machine.

Professional desktop laser-based SLA printers typically have a laser spot size between 70- and 140-microns – which sounds worse, but yields aesthetically different and similarly detailed prints.

Bumping the masking display to 4K (3940 x 2160 pixels) while keeping the panel at 5.5 inches, Phrozen increases the Shuffle 4K’s X/Y resolution to 31-microns.

Such a change isn’t merely a drop-in replacement. The higher pixel density necessitates a change of UV light source too. Gone is the paraLED of the OG Shuffle, dispatched in favor of a shiny new paraLED 2.0.

Phrozen’s proprietary UV engine, the paraLED is an array of UV emitting LEDs topped with a unique arrangement of concave glass forms. These glass globules bend the light to pass through the LCD as close to parallel as possible, something Phrozen claims results in neater, cleaner and faster prints.

Though Phrozen does not explicitly state it anywhere, we imagine the new paraLED also gets a bump in power, too, something known to juice the speeds at which an LCD printer can print.

New UI

Other improvements over the original Shuffle come in the form of a new UI – something we pooh-poohed in our review of the Shuffle – a cleaner, customized Raspberry Pi that no longer necessitates you connect the printer to itself to operate – which we also found odd – and a switch away from LAN and onboard-only slicing using NanoDLP.

Phrozen Shuffle 4K

Side Step in Stability?

A notable absence from the Shuffle 4K is a ball screw for the print plate to ride up and down. Typically used for stability, and employed in the original Phrozen Shuffle, here instead we get the much more common lead screw.

Perhaps it was found to have a negligible impact on print performance. A linear rail backs up the screw for what we hope to be rigid and repeatable travel through the Z-axis. Although we will say the placebo effect of seeing heavy duty parts on a printer certainly makes you think its better. It’ll be interesting to see how the Shuffle 4K feels after this change.

Third-Party Resin Compatibility

The Shuffle 4K is compatible with third-party resins — always a welcome thing. Similarly welcome is the addition of an air filtration unit inside the box. We don’t expect this to eliminate the odor, but every little helps. As always, use the printer in a well-ventilated space.

Build Volume

A 120 x 67 mm build plate pairs with a Z-axis travel of 170 mm, making the Shuffle 4K’s build volume 30 mm shorter than that of its predecessor.

Phrozen Shuffle 4K

WiFi Connectivity

The inclusion of a high spec screen is easily the biggest takeaway of the Shuffle 4K. However, possibly the greatest quality of life upgrade this new machine brings is WiFi connectivity. We’ve yet to go hands-on and see in what shape or form this takes, especially when paired with Phrozen’s new Phrozen OS, which itself brings a fresh UI. But our hope is a much-simplified workflow that requires less futzing on the part of the user to get a print going.


Phrozen Shuffle 4K – Review the Specs Specs


Printing Technology: LCD-based Masked Stereolithography (MSLA)

LCD: 5.5-inch 4K 405nm paraLED 2.0 Matrix Optical Engine

Build Volume: 120 x 68 x 170 mm

Z-Layer Resolution: 10-micron

XY Resolution: 31-micron

UI: Color touchscreen

Connectivity: USB, LAN, WiFi, Micro-USB

Build Platform Leveling: Assisted leveling

Materials: Resins suitable for 405nm LCD-based printers


Software bundle: Phrozen OS (onboard), Phrozen Slicer (desktop)

File types: ZIP (onboard), SLC (onboard), STL (desktop)


Weight: 7kg

Dimensions: 280 x 280 x 370 mm


Phrozen Shuffle 4K – Review the Specs Where to Buy

Priced at over $1,200, the Phrozen Shuffle 4K costs significantly more than the 2K-touting Phrozen Shuffle. At such a price, it would appear to be positioned as compete with the Prusa SL1 and Peopoly Moai. The Phrozen Shuffle 4K is available from the retailers listed below.

Phrozen Shuffle 4K

Product image of Phrozen Shuffle 4K

License: The text of "2019 Phrozen Shuffle 4K LCD 3D Printer – Review the Specs" by All3DP is licensed under a Creative Commons Attribution 4.0 International License.

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