3D Printing Info

Printer comparison

ELEGOO Neptune 4 Plus vs Phrozen Sonic Mini 8K S

Compare hardware, build volume, printing specifications, dated prices and sources.

ELEGOO Neptune 4 Plus guidePhrozen Sonic Mini 8K S guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ELEGOO Neptune 4 Plus comparisonsMore Phrozen Sonic Mini 8K S comparisons
ELEGOO Neptune 4 Plus vs Phrozen Sonic Mini 8K S — documented properties and sources
PropertyELEGOO Neptune 4 PlusBEDSLINGERPhrozen Sonic Mini 8K SRESIN
Identity
BrandELEGOOPhrozen
ClassBEDSLINGERRESIN
Identity & Market
Manufacturer & exact marketed model name (verify the exact product identity first)ELEGOO Neptune 4 Plus[1]Phrozen Sonic Mini 8K S 7.1" LCD 3D Printer. Manufacturer number 51010040501102[2][3][4]
Release date (announcement and actual shipping)Listed on the ELEGOO US store from 20 September 2023 (Shopify publish date), the same date as the Neptune 4 Max[5][6]Not documented
Street price (USD; dated snapshot per entry)$309.00 on us.elegoo.com, Aug 2026, against a compare-at price of $425.00. Only a Ribbon-Cable printhead variant is listed for the Plus, unlike the Neptune 4 and 4 Max which also offer a Type-C version[5][7][6]$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[4][3]
Variants & sibling models — and how to tell them apart (spec-contamination risk)Middle model of the Neptune 4 family. Against the base Neptune 4: bigger (320 x 320 x 385 mm), but a lower bed ceiling (100 C rather than 110 C) and much lower acceleration (12000 rather than 20000 mm/s2). Against the Max: smaller and lighter (14.4 kg against 18.1 kg) but with a higher bed ceiling (100 C against 85 C) and higher acceleration (12000 against 8000). Its Z drive is 2 lead screws with 2 tie rods, where the Centauri machines use 3 lead screws[1][8][9][10]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[3][2][4][11]
Physical & Frame
Build volume X×Y×Z (mm) — advertised vs actually usable320 x 320 x 385 mm; printing platform 330 x 330 mm[1]165 x 72 x 170 mm[2][4]
Machine footprint (mm) & clearance needed (cable/spool overhang)533 x 517 x 638 mm; ELEGOO also publishes a maximum size for machine activity of 578 x 750 x 860 mm including rack and tray, so allow 750 mm of depth[1]290 x 290 x 430 mm[2][4]
Net weight (kg)14.4 kg net, 16.65 kg gross[1]10 kg[2][4]
Frame construction & materialCNC-machined aluminium extrusion frame (Neptune 4 family)[8]Black textured housing with a neon-green plastic cover[2]
Enclosure: open / enclosed; panel material; door/lidOpen frame, no enclosure[1]Open-frame MSLA with a UV-blocking plastic cover[2]
Kinematics & Motion Hardware
Kinematics (bedslinger i3 / CoreXY / other)Cartesian i3 bed-slinger[1]MSLA, single Z axis on one linear rail with a lead screw, straight-lift peel[2][4]
X-axis guide type (rods / linear rails / V-wheels; size)Not documentedOne linear rail; lead screw (not a ball screw)[2][4]
Z-axis: leadscrew count & type, sync mechanism, anti-backlashTwo lead screws with two tie rods[1]Not documented
Stepper drivers (exact model e.g. TMC2209; UART/SPI; sensorless homing?)"Silent Drive (All Axes)" is all ELEGOO publishes; the driver part number is not given on the product page[1]Not documented
Speed & Acceleration
Max print speed (claimed, mm/s)30-500 mm/s printing speed, with 250 mm/s given by ELEGOO as the recommended figure - the 500 mm/s number is a ceiling, not a working speed[1]Not documented
Recommended/typical print speed250 mm/s recommended printing speed (manufacturer figure)[1]Not documented
Max acceleration (claimed, mm/s²)12000 mm/s2 maximum acceleration; default acceleration 5000 mm/s2[1]Not documented
Extruder
Type (direct drive / bowden) & design nameDual-gear direct extruder with 2 fans (the Centauri machines use a 1-fan version)[1][10]Not documented
Hotend & Nozzle
Hotend design (proprietary/standard; quick-swap mechanism?)Brass nozzle, 0.4 mm, with a titanium-alloy heat break[1]Not documented
Max nozzle temp claimed AND firmware max temp limit (both values)300 C claimed max nozzle temperature[1]Not documented
Heated Bed & Surface
Max bed temp claimed AND firmware limit100 C max heated bed temperature at 25 C ambient[1]Not documented
Bed surface (material, texture, coating), single/double-sidedPEI spring steel sheet; ELEGOO notes it is now upgraded to a dual-sided textured PEI + PLA-specific surface[1]Not documented
Leveling & Z-Offset
Auto bed leveling: probe technology (inductive / strain gauge / load cell / touch probe)Manual levelling combined with 121-point auto-levelling[1]Not documented
Filament Handling & Detection
Filament runout sensor (type, location)Filament run-out sensor and power-loss recovery; no camera, no clog detection, no auto filament unloading[1]Not documented
Electronics & Power
Mainboard model & MCU (exact chip markings if teardowns exist)ELEGOO describes it only as a "Klipper High-Speed Quiet Motherboard" - no board model or MCU is published[1]Not documented
Input voltage (110/220 V, switch or auto)Not documented24 V DC, 2 A[4]
Total rated power draw320 W rated power; 24 V output; 110-120 V / 220-240 V input[1]48 W maximum system power[4]
Firmware & Openness
Firmware base & current version (Klipper fork / Marlin fork / proprietary)Klipper (ELEGOO names the system "Klipper" outright for the Neptune 4 Plus, rather than the ELEGOO OS branding used on the Centauri machines)[1][10]Not named by Phrozen. Native file format .PRZ; compatible slicers CHITUBOX, Lychee and VoxelDance Tango[2][4]
Connectivity, UI & Camera
Display: size, type, touch?4.3-inch colour capacitive touch screen[1]3.5-inch touch panel (control panel — not the masking LCD, see W1)[4]
On-device UI capabilities (model preview, per-object controls, etc.)Colour capacitive touch UI; ElegooSlicer is recommended, with Orca and Cura also supported[1]Not documented
WiFi (band/standard), Ethernet, USB ports, SD/flash-driveUSB, LAN and Wi-Fi[1]USB only[2][4]
Materials Support
Officially supported filament listPLA, TPU, PETG, ABS, ASA, Nylon[1]405 nm photopolymer resin; no closed compatibility list published[2]
Noise & Power Consumption
Noise: claimed dB and independently measured dB (distance/method)Operating sound is published as 65 dB or less - a manufacturer figure with no measuring distance or method given, so it is not comparable with a reviewer's dB reading[1]Not documented
Reliability, Support & Ecosystem
Warranty length & support reputation (evidence, not vibes)12 months on brand-new machines and parts, but ELEGOO's own table excludes a long list of parts from that: PEI plate / build plate / nozzle kit / PTFE tube / heater / thermistor / hot end / packaging / manual / tools carry no warranty at all, and the extruder, extruder kit and printhead kit get 6 months. Certified pre-owned machines carry no warranty[12]Not documented
Resin & MSLA
Masking LCDNot documented7.1-inch 8K monochrome masking LCD, XY pixel pitch 22 um. Phrozen does not publish the pixel count for this model[2][4]
Light sourceNot documentedLinear projection LED module. Wavelength not published for this model[2][4]
Vertical print speedmm/hNot documentedMax 80 mm/h (manufacturer claim). Phrozen does not state the layer height or resin type the figure assumes[4]
Layer height rangeNot documented0.01-0.30 mm[4]
Release filmNot documentedFEP film — note this is plain FEP, whereas the Sonic Mighty Revo 14K ships nFEP. No rated life published[4][11]

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

  1. ELEGOO Neptune 4 Plus product page (full specification table) us.elegoo.com · 2026-08 · vendor
  2. Phrozen Sonic Mini 8K S technical data table 3djake.com · 2026-08 · vendor
  3. Phrozen US 3D printer collection (live prices and stock) us.phrozen3d.com · 2026-08 · vendor
  4. Phrozen Sonic Mini 8K S 7.1" LCD 3D Printer product page us.phrozen3d.com · 2026-08 · vendor
  5. ELEGOO Neptune 4 Plus Shopify product JSON (variant prices and store publish date) us.elegoo.com · 2026-08 · vendor
  6. ELEGOO Neptune 4 Max Shopify product JSON (variant prices and store publish date) us.elegoo.com · 2026-08 · vendor
  7. ELEGOO Neptune 4 Shopify product JSON (variant prices and store publish date) us.elegoo.com · 2026-08 · vendor
  8. ELEGOO Neptune 4 product page (Specification table) us.elegoo.com · 2026-08 · vendor
  9. ELEGOO Neptune 4 Max product page (Specification table) us.elegoo.com · 2026-08 · vendor
  10. ELEGOO Centauri Carbon product page (full specification table) us.elegoo.com · 2026-08 · vendor
  11. Phrozen Sonic Mighty Revo 14K 10.1" LCD 3D Printer product page us.phrozen3d.com · 2026-08 · vendor
  12. ELEGOO Refund & Warranty policy (warranty period table) us.elegoo.com · 2026-08 · vendor