3D Printing InfoPrinter comparison
Phrozen Sonic Mini 8K S vs Original Prusa MK4
Compare hardware, build volume, printing specifications, dated prices and sources.
2 selected · all documented properties
Open these two in the interactive comparisonMore Phrozen Sonic Mini 8K S comparisonsMore Original Prusa MK4 comparisons
| Property | Phrozen Sonic Mini 8K SRESIN | Original Prusa MK4BEDSLINGER |
|---|---|---|
| Identity | ||
| Brand | Phrozen | Prusa Research |
| Class | RESIN | BEDSLINGER |
| Identity & Market | ||
| Manufacturer & exact marketed model name (verify the exact product identity first) | Phrozen Sonic Mini 8K S 7.1" LCD 3D Printer. Manufacturer number 51010040501102[1][2][3] | Original Prusa MK4[4] |
| Release date (announcement and actual shipping) | Not documented | Announced 29 March 2023 with assembled printers shipping immediately from stock; kits opened for ordering about two weeks later[4] |
| Launch MSRP (USD) | Not documented | 1099 USD assembled, 799 USD as a kit, VAT included, at launch[4] |
| Street price (USD; dated snapshot per entry) | $270.00 on us.phrozen3d.com, backordered with an end-of-September ETA, checked Aug 2026. The collection page rendered it as unavailable on the same day[3][2] | Not documented |
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | Phrozen's 7.1-inch line is easy to confuse: the Sonic Mini 8K S ($270) sits beside the older Sonic Mini 8K ($340, sold out) and the 5.5-inch Sonic Mini ($129.99). The 10.1-inch Sonic Mighty family is a different size class entirely. The 8K S is the only one of the group with a single linear rail and a lead screw rather than a ball screw[2][1][3][5] | Superseded by the MK4S, which is the same machine plus a 360-degree turbine part-cooling fan, a high-flow CHT nozzle and firmware/profile work; Prusa sold a 99 USD MK4-to-MK4S upgrade kit and automatically converted unshipped MK4 orders to the S version. The MK3.5 and MK3.9 upgrades convert an MK3S+ to part of the MK4 electronics stack but are not an MK4[6][4] |
| Market position: superseded? successor announced? | Not documented | Discontinued. No MK4 appears in Prusa's Aug 2026 3D-printer listing, and the MK4 product-page slugs redirect to the MK4S page, so no live first-party price could be recorded[7][6] |
| Physical & Frame | ||
| Build volume X×Y×Z (mm) — advertised vs actually usable | 165 x 72 x 170 mm[1][3] | 250 x 210 x 220 mm (manufacturer figure)[4] |
| Machine footprint (mm) & clearance needed (cable/spool overhang) | 290 x 290 x 430 mm[1][3] | Not documented |
| Net weight (kg) | 10 kg[1][3] | Not documented |
| Frame construction & material | Black textured housing with a neon-green plastic cover[1] | Die-cast aluminium frame - Prusa replaced the MK3S+'s cut-aluminium frame for the MK4, keeping only the Y-axis profiles, some bearings, the heatbed and the power supply[4] |
| Enclosure: open / enclosed; panel material; door/lid | Open-frame MSLA with a UV-blocking plastic cover[1] | Open frame; the Original Prusa Enclosure is an optional add-on[4] |
| Kinematics & Motion Hardware | ||
| Kinematics (bedslinger i3 / CoreXY / other) | MSLA, single Z axis on one linear rail with a lead screw, straight-lift peel[1][3] | Cartesian bed-slinger of the Prusa i3 family - Prusa's MK4 announcement records that the MK3S+ Y-axis profiles and heatbed were carried over[4] |
| X-axis guide type (rods / linear rails / V-wheels; size) | One linear rail; lead screw (not a ball screw)[1][3] | Not documented |
| Stepper motors (frame size, step angle, brand if known) | Not documented | 400-step (0.9 degree) stepper motors, stated by Prusa to prevent vertical fine artefacts[4] |
| Stepper drivers (exact model e.g. TMC2209; UART/SPI; sensorless homing?) | Not documented | Trinamic TMC2130-LA silent stepper drivers on the xBuddy board[4] |
| Extruder | ||
| Type (direct drive / bowden) & design name | Not documented | Nextruder direct drive with a planetary gear system, 1:10 gearbox ratio; aluminium heatsink, all-metal hotend, no PTFE tube in the filament path[4] |
| Gear ratio & drive gear material | Not documented | 1:10 planetary gearbox[4] |
| Hotend & Nozzle | ||
| Hotend design (proprietary/standard; quick-swap mechanism?) | Not documented | Quick-swap nozzle system, 0.4 mm default, other diameters supported[4] |
| Max nozzle temp claimed AND firmware max temp limit (both values) | Not documented | 300 C claimed max hotend temperature in Prusa's MK4 announcement table - note the MK4S product page publishes 290 C for the same hotend family[4][8] |
| Heated Bed & Surface | ||
| Max bed temp claimed AND firmware limit | Not documented | 120 C max heatbed temperature[4] |
| Bed surface (material, texture, coating), single/double-sided | Not documented | Magnetic heatbed with removable PEI spring-steel sheets; compatible with the MK3 sheets (smooth PEI, satin, textured PEI, PA nylon)[4] |
| Leveling & Z-Offset | ||
| Auto bed leveling: probe technology (inductive / strain gauge / load cell / touch probe) | Not documented | Load-cell sensor: fully automatic first-layer calibration with the nozzle as the probe, plus automatic mesh bed levelling over the print area[4] |
| Filament Handling & Detection | ||
| Filament runout sensor (type, location) | Not documented | Built-in Hall-effect filament sensor supporting automatic filament loading[4] |
| Electronics & Power | ||
| Mainboard model & MCU (exact chip markings if teardowns exist) | Not documented | Custom 32-bit xBuddy board with STM32, designed and built in-house, with a separate extruder breakout board[4] |
| PSU (brand, wattage, rail voltage) | Not documented | 240 W Delta PSU with hardware power panic[4] |
| Input voltage (110/220 V, switch or auto) | 24 V DC, 2 A[3] | Not documented |
| Total rated power draw | 48 W maximum system power[3] | Not documented |
| Firmware & Openness | ||
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Not named by Phrozen. Native file format .PRZ; compatible slicers CHITUBOX, Lychee and VoxelDance Tango[1][3] | Open-source Prusa Buddy firmware. The source tree (prusa3d/Prusa-Firmware-Buddy on GitHub) explicitly covers the Original Prusa MINI/MINI+, MK4, XL and CORE One and was last pushed to in August 2026. Updates are applied from a USB drive, through Prusa Connect or through the Prusa mobile app[9][8] |
| Connectivity, UI & Camera | ||
| Display: size, type, touch? | 3.5-inch touch panel (control panel — not the masking LCD, see W1)[3] | 3.5-inch 65k-colour graphic screen[4] |
| On-device UI capabilities (model preview, per-object controls, etc.) | Not documented | On-device colour UI with one-click printing and status LEDs; Prusa Link is integrated and Prusa Connect adds remote printing[4] |
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | USB only[1][3] | Ethernet built in, optional ESP Wi-Fi module delivered with the printer, USB drive; print files can also arrive over LAN or the internet via Prusa Connect[4] |
| Materials Support | ||
| Officially supported filament list | 405 nm photopolymer resin; no closed compatibility list published[1] | Prusa's launch table says "any thermoplastic including Nylon and Polycarbonate"; the enclosure is still needed in practice for ABS/ASA-class materials[4] |
| Safety | ||
| Thermal runaway protection (verify in firmware source if at all possible) | Not documented | xBuddy hardware overcurrent protection disconnects heater and heatbed power when total current exceeds 15 A; firmware is open-source and auditable[4][9] |
| Reliability, Support & Ecosystem | ||
| Warranty length & support reputation (evidence, not vibes) | Not documented | 2-year warranty for consumers in the EU, Liechtenstein, Switzerland, Norway and Iceland; 1 year for EU enterprises and 1 year for the rest of the world, which includes the United States. A printer bought from a reseller or privately carries 1 year from the original delivery date and is handled by the reseller. Prusa advertises 24/7 chat and e-mail support in seven languages[10][8] |
| Resin & MSLA | ||
| Masking LCD | 7.1-inch 8K monochrome masking LCD, XY pixel pitch 22 um. Phrozen does not publish the pixel count for this model[1][3] | Not documented |
| Light source | Linear projection LED module. Wavelength not published for this model[1][3] | Not documented |
| Vertical print speedmm/h | Max 80 mm/h (manufacturer claim). Phrozen does not state the layer height or resin type the figure assumes[3] | Not documented |
| Layer height range | 0.01-0.30 mm[3] | Not documented |
| Release film | FEP film — note this is plain FEP, whereas the Sonic Mighty Revo 14K ships nFEP. No rated life published[3][5] | Not documented |
Manufacturer claims, independent measurements, packages and test conditions retain their source wording. FDM linear speed and resin vertical speed use different units and are not directly comparable. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.
Sources for this comparison
- Phrozen Sonic Mini 8K S technical data table 3djake.com · 2026-08 · vendor
- Phrozen US 3D printer collection (live prices and stock) us.phrozen3d.com · 2026-08 · vendor
- Phrozen Sonic Mini 8K S 7.1" LCD 3D Printer product page us.phrozen3d.com · 2026-08 · vendor
- Prusa blog - Original Prusa MK4 is here (published 29 March 2023), including the MK4 specification table and launch prices blog.prusa3d.com · 2026-08 · doc
- Phrozen Sonic Mighty Revo 14K 10.1" LCD 3D Printer product page us.phrozen3d.com · 2026-08 · vendor
- Prusa blog - The Original Prusa MK4S is Here! (published 12 August 2024) blog.prusa3d.com · 2026-08 · doc
- Prusa 3D printers category listing with live e-shop prices, Aug 2026 prusa3d.com · 2026-08 · vendor
- Original Prusa MK4S 3D Printer product page (Technical Parameters + CORE One+/MK4S/XL comparison table) prusa3d.com · 2026-08 · vendor
- GitHub - prusa3d/Prusa-Firmware-Buddy (firmware for MINI, MK4, XL and CORE One) github.com · 2026-08 · doc
- Prusa Knowledge Base - Warranty help.prusa3d.com · 2026-08 · doc