Stronghold S9X commercial coffee roaster
Stronghold Roasting System · Special Offer

Stronghold Roasting System

Built for specialty coffee roasters

Efficiency. Consistency. Scale.

Explore configuration
01 — Comparison

Why Not Traditional Roasters?

Traditional
  • Depends on roast master
  • Inconsistent results
  • Hard to scale
Stronghold
  • + System-driven roasting
  • + Repeatable quality
  • + Scalable operations
02 — Full Lineup

The Stronghold Range

Beyond the recommended configuration, the full Stronghold lineup offers a roaster for every scale — from sample development to high-volume production.

Stronghold S2
Roast Without Limits
S2

Compact sample roaster. Small form, infinite potential.

Batch
80–300 g
Output
1.2 kg / hour
Power
220V · 2 kW
Hot AirHalogenX-Lens
Stronghold S7 Pro
Taste of Innovation
S7 Pro

Tailored for roastery cafés — compact, capable, beautifully engineered.

Batch
150–850 g
Output
2.8 kg / hour
Power
220V · 3.5 kW
Hot AirHalogen
Stronghold S7X
Beyond Technology
S7X

The trusted choice of the world's finest specialty coffee professionals.

Batch
150–850 g
Output
3.6 kg / hour
Power
220V · 5.8 kW
Hot AirHalogenDrum HeaterX-Lens
Stronghold S8X
Take the Leap Forward
S8X

Gateway into true professional roasting. Mid-size efficiency.

Batch
1.5–4.5 kg
Output
19 kg / hour
Power
380V · 19.5 kW
Hot AirHalogenDrum HeaterX-Lens
Stronghold S9X
Engineered for Scale
S9X

Large-capacity roaster. The ultimate solution for specialty coffee suppliers.

Batch
3–8 kg
Output
34 kg / hour
Power
380V · 34.3 kW
Hot AirHalogenDrum HeaterX-Lens

* Maximum output is based on 4–5 batches at full green-bean capacity. Actual results vary by bean type, roast profile, and discharge timing.

03 — Business Impact

Built for Business Performance

01
Reduce Labor Cost

Automated roasting profiles reduce dependency on highly skilled roast masters.

02
Auto-Replication

Once recipes are dialed in, the machine auto-replicates each profile with the highest level of consistency — no need to babysit the roaster.

03
Production Efficiency

Up to 34 kg/hour output with rapid integrated cooling.

04
Consistency at Scale

The same taste, every batch — with ±1.0 reproducibility.

05
Data-Driven Roasting

Real-time data, profile saving, and full repeatability.

06
Boost Cloud & Community

Manage profiles and inventory in the Boost cloud platform, and tap into the global Stronghold community to learn from the world's best roasters.

04 — Real Experience

FLASK COFFEE — Our Experience

FLASK COFFEE — Our Story

When we started FLASK COFFEE, we had no experience in coffee roasting. No background. No technical foundation. Only one thing was clear: we wanted to build one of the best coffee roasting companies in our market.

But ambition alone is not enough. We knew that if we followed the traditional path, it would take years to develop the level of quality we were aiming for. That was not acceptable for us.

So instead of asking, "How do we learn roasting?" we asked a different question: "What system allows us to become excellent as fast as possible?"

From that point, we defined three non-negotiable criteria: 1. Speed to Excellence — a system that could dramatically shorten the learning curve. 2. Operational Efficiency — a business that does not depend on expensive, hard-to-find specialists. 3. Consistency at Scale — every batch had to meet the same standard, without compromise.

We evaluated multiple solutions. And very quickly, one answer became clear: Stronghold.

It was not just about roasting. It was about building a system that could deliver precision, repeatability, and control from day one.

The result? Within 6 months, FLASK COFFEE became one of the leading coffee roasting companies in our market. Not because we had more experience than others — but because we made the right decision early.

Stronghold allowed us to: • Reach high-level roasting quality in a short time • Operate efficiently with a lean team • Maintain consistency across every batch

For us, it was more than equipment. It was a turning point.

Today, we see the same pattern emerging globally. A new generation of roasteries is not built on years of trial and error, but on systems that accelerate performance.

If your goal is to build a strong and scalable roasting operation, this is where the advantage begins.

05 — Commercial

Commercial Terms

Payment
50% upon signing · 50% before shipment
Lead Time
1–3 months production
Delivery Terms
EXW Korea
Shipping
Calculated separately
06 — Support

Warranty & Support

Warranty Period
  • 12 months from installation
  • 1,000 roasting batches
  • 14 months from shipment
Whichever comes first.
Covered
  • Manufacturing defects
  • Replacement of original components
Not Covered
  • Operator error
  • Electrical issues
  • Unauthorized modifications
Service
  • Spare parts from manufacturer
  • Technician visits & diagnostics — paid separately
  • All communication via Synesthesia LLP
09 — A System for Growth

Stronghold is not just a machine.

It is a system designed to reduce operational cost, improve consistency, and support long-term growth.