Elegoo Mars 4 Ultra vs Phrozen Sonic Mega 8K S2
Head-to-head 3D printer comparison, 2026
The Elegoo Mars 4 Ultra and Phrozen Sonic Mega 8K S2 are both RESIN 3D printers competing in different tiers, $199 vs $749. Both are scored across value, beginner-friendliness, quality, speed, and reliability. Here's the full breakdown.
Our Verdict
The Elegoo Mars 4 Ultra takes the crown with 7.8/10 vs 6.6/10. It pulls ahead in Value, Beginner Friendliness, Speed.
Score Breakdown
Specifications
| Spec | Elegoo Mars 4 Ultra | Phrozen Sonic Mega 8K S2 |
|---|---|---|
| Price | $199 | $749 |
| Type | RESIN | RESIN |
| Build Volume | 153 x 77 x 165 mm | 330 x 185 x 400 mm |
| Print Speed | 100 mm/s | 100 mm/s |
| Min Resolution | 0.01 mm | 0.01 mm |
| Weight | 6.8 kg | 22 kg |
| Overall Score | 7.8/10 | 6.6/10 |
Pros & Cons
Elegoo Mars 4 Ultra
+9K resolution is a meaningful jump from 7K: finer surface texture, sharper edges on small parts
+Tilt release means FEP films last longer; $50 less per year in consumables is real money
+Built-in air purifier takes the edge off the smell without requiring an external solution
+WiFi monitoring means you can start a print and check it from another room
−153x77mm plate is tight for anything larger than small character models
−Still needs a wash and cure station: budget $50-80 extra
−Resin workflow is messier and slower to start than FDM
Phrozen Sonic Mega 8K S2
+330x185mm plate is the largest resin build area in the consumer market at this price
+8K detail across the full plate without the hot spot degradation that plagues cheaper large-format LCDs
+Dual tilt release on a plate this size prevents the vacuum seal failures that ruin large prints
+Professional-grade aluminum build quality that handles the stress of frequent full-plate runs
−$749 for a resin printer is a serious investment, plus $80-120 for a wash station to match
−High resin consumption: a full plate run uses 400-500ml, which adds up weekly
−100mm/hr speed is the same as entry-level machines: the size advantage doesn't come with a speed advantage
Who Should Buy Which?
Choose the Elegoo Mars 4 Ultra if you want:
- A great printer for miniatures
- A great printer for resin
- A great printer for budget
- 9K mono LCD
- Tilt release
- WiFi
Choose the Phrozen Sonic Mega 8K S2 if you want:
- A great printer for resin
- A great printer for large-prints
- A great printer for professional
- 8K mono LCD
- 33cm build plate
- Dual tilt release
Frequently Asked Questions
Is the Elegoo Mars 4 Ultra better than the Phrozen Sonic Mega 8K S2?
By the numbers, the Elegoo Mars 4 Ultra scores higher (7.8/10). But "better" depends on your use case, the Phrozen Sonic Mega 8K S2 may be the smarter buy if you need resin.
Which is better for beginners, Elegoo Mars 4 Ultra or Phrozen Sonic Mega 8K S2?
The Elegoo Mars 4 Ultra is more beginner-friendly (7/10 vs 4/10) with easier setup and a gentler learning curve.
Is the Phrozen Sonic Mega 8K S2 worth $550 more than the Elegoo Mars 4 Ultra?
The Elegoo Mars 4 Ultra actually scores higher (7.8/10) despite costing $550 less. The Phrozen Sonic Mega 8K S2 only makes sense if you specifically need resin.
What's the main difference between Elegoo Mars 4 Ultra and Phrozen Sonic Mega 8K S2?
Build volume (153x77x165mm vs 330x185x400mm) and print speed (100 vs 100 mm/s). The Elegoo Mars 4 Ultra is best for miniatures; the Phrozen Sonic Mega 8K S2 targets resin.