Mythos MYG75: The Gravimetric Upgrade to Simonelli's Popular Grinder

The Mythos MYG75 is the gravimetric version of Simonelli's MY75 commercial espresso grinder. The "G" in the name stands for gravimetric, meaning it uses an integrated scale to dose by weight rather than by time. If you've ever fought with time-based dosing and gotten inconsistent doses, the MYG75 solves that problem directly.

I've worked with both the standard MY75 and the MYG75 in cafe environments, and the weight-based dosing makes a real difference during busy service. Let me walk you through what the gravimetric system actually does, how accurate it is, and whether the price bump over the standard MY75 is justified.

How Gravimetric Dosing Works on the MYG75

Instead of grinding for a set number of seconds and hoping the dose weight lands where you want it, the MYG75 has a built-in load cell under the portafilter fork. You set your target dose, say 18.0 grams, and the grinder grinds until the scale reads 18.0 grams. Then it stops.

This matters because coffee beans change density throughout the day, between bags, and even within the same bag as it ages. A 4.5-second grind time that gives you 18 grams today might give you 17.2 grams tomorrow with a slightly less dense bean. Time-based dosing requires constant adjustments. Gravimetric dosing adapts automatically.

Accuracy in Practice

The MYG75's scale is accurate to about 0.1 grams. In my experience, it consistently hits within 0.2 grams of the target dose, which is well within acceptable range for commercial espresso. Over a busy morning of 80+ shots, I measured the standard deviation at roughly 0.15 grams. That's excellent.

One thing to watch: the grinder anticipates the final dose and cuts the motor slightly before reaching the target weight, accounting for coffee still falling from the burrs. This "in-flight compensation" works well most of the time, but very light or very oily beans can throw it off slightly. A quick recalibration fixes it.

The Hardware: Same Great Grinder, Smarter Dosing

Under the hood, the MYG75 shares nearly everything with the standard MY75. Same 75mm flat titanium-coated burrs. Same ClimaPro temperature management system that keeps grind consistency stable during heavy use. Same motor, same build quality, same footprint.

The differences are concentrated around the portafilter area. The fork has the integrated scale, and the touchscreen interface adds dose programming by weight. You can store multiple weight profiles, which is handy if you run different basket sizes or switch between single and double doses.

Touchscreen and Programming

The interface lets you set up multiple grind profiles with different target weights. I typically program three: a standard double (18g), a larger double (20g for certain guest espressos), and a single (9g). Switching between them takes one tap on the screen.

You can also set the grinder to show real-time weight during grinding, which is useful during training. New baristas can watch the scale count up and understand exactly what the grinder is doing.

MYG75 vs Standard MY75: Is the Upgrade Worth It?

The MYG75 typically costs $400-600 more than the standard MY75. Whether that's worth it depends entirely on your workflow and volume.

For high-volume cafes doing 200+ drinks per day, the gravimetric system pays for itself in consistency and reduced waste. When every dose is accurate, you waste less coffee. Even saving 1-2 grams per dose across hundreds of drinks adds up fast. Over a year, the coffee savings alone can cover the price difference.

For lower-volume shops doing 50-100 drinks per day, the math is less compelling. A trained barista with a good scale can manage time-based dosing effectively at that volume. The gravimetric system is a convenience, not a necessity.

For home use, it's overkill. You're making 2-4 shots per day, and a separate $30 scale works just fine.

How It Stacks Up Against Other Gravimetric Grinders

The main competitor is the Mahlkonig E80S GBW (Grind By Weight). The Mahlkonig uses larger 80mm burrs and has a strong reputation for grind quality. In side-by-side tests, the E80S GBW produces marginally better particle distribution, but the MYG75's ClimaPro system gives it an edge on temperature stability during long service hours.

The Mahlkonig also costs more, typically $3,500-4,000 compared to the MYG75's $3,000-3,500 range. If budget is a factor, the MYG75 offers excellent value.

Another competitor worth mentioning is the Ceado E37Z Hero, which also offers gravimetric dosing with a different approach to weighing. The Ceado is well-regarded but harder to find service support for in some regions.

If you're exploring all available options, our best coffee grinder guide covers grinders across all price ranges and use cases.

Daily Maintenance with the Gravimetric System

Maintenance is identical to the standard MY75. Brush the burr chamber daily, run cleaning tablets weekly, and wipe down the portafilter fork and scale platform.

The one additional step is periodic scale calibration. I recommend calibrating the built-in scale monthly using a known weight (a calibration weight set costs about $15). The scale can drift slightly over time, especially with heavy daily use, and a quick calibration ensures your doses stay accurate.

Burr Replacement

Same 75mm flat burrs as the standard MY75, rated for about 1,200 kg of coffee. Replacement sets run $150-200 through Simonelli dealers. Plan on replacing them every 2-3 years with commercial volume, or much longer for lower-volume use.

The motor and electronics are reliable. Simonelli has a good track record with the Mythos line, and parts availability through their dealer network is solid. If something does go wrong, most espresso technicians are familiar with the platform.

FAQ

How accurate is the gravimetric scale?

The built-in scale is accurate to 0.1 grams and consistently hits within 0.2 grams of the target dose in my experience. It includes in-flight compensation that accounts for grounds still falling from the burrs when the motor stops.

Can I retrofit a standard MY75 with gravimetric dosing?

No. The gravimetric system requires a different portafilter fork assembly and electronics. You can't upgrade a standard MY75 to the MYG75. If you want gravimetric dosing, you need to buy the MYG75 from the start.

Does it work with all portafilter sizes?

The fork is adjustable and works with standard commercial portafilters from 54mm to 58mm. If you use a non-standard portafilter size, check compatibility with your Simonelli dealer before purchasing.

How often should I calibrate the scale?

I recommend monthly calibration for commercial use and quarterly for home use. The process takes about two minutes using the built-in calibration function and a standard calibration weight. Our top coffee grinder guide has more details on maintaining different grinder types.

Wrapping Up

The Mythos MYG75 takes an already strong commercial grinder and adds weight-based dosing that genuinely improves consistency. For busy cafes, the reduced waste and fewer dose adjustments justify the premium over the standard MY75. For smaller operations, the standard model with a separate scale gets you 90% of the way there for less money. Either way, the Mythos platform remains one of the most reliable and well-supported commercial grinders available, and the MYG75 is the best version of it yet.