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. We scored both 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 for exceptional detail
+Tilt release reduces FEP wear
+Built-in air purifier
+WiFi connectivity
−Smaller build plate than Saturn
−Requires wash & cure station
−Resin learning curve
Phrozen Sonic Mega 8K S2
+Massive 330mm resin build plate
+8K detail across a large area
+Batch-print large terrain or busts
+Professional-grade build quality
−Expensive for resin
−High resin consumption
−Heavy and large footprint
−Slow like all MSLA printers
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.