Heat exchanger
Quick Mill
Aquila
Footprint
31×48×36cm
Weight
28.5kg (62.8 lb)
Stone Espresso Stone
Heat exchanger
F3 · Advanced
Stone Espresso Stone
Estimated price range
1000–2200 € ≈ $1,080–$2,376
Editorial estimate · updated sep 2026
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Where to buy
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Data from official source
The Stone is a compact heat-exchanger machine, just over twenty centimetres wide: a one-and-a-half-litre boiler makes steam, and the brew water runs through it in a coil, heating as it goes. The group is solid brass, over three kilos, with its own heating controlled by a PID to hold the brew temperature steady.
It is ready in about ten minutes. The body is all metal, with no plastic parts, and a coloured light shows the machine's status and any alarms. The front panels unclip and change quickly, and the same machine comes in several finishes.
The tank is small, 1.2 litres, and needs frequent refilling. It is for someone who wants a narrow heat exchanger that is ready quickly, with brew temperature held by the heated group, and a look to choose.
01 · Verified data
Technical specifications
Power
1000 W
Dimensions
22.5 × 44 × 35.5 cm (8.9 × 17.3 × 14.0 in)
Weight
20.5 kg (45.2 lb)
| Parameter | Value | Source |
|---|---|---|
| Machine dimensions | 22.5 × 44 × 35.5 cm (8.9 × 17.3 × 14.0 in) | manufacturer website |
| Weight | 20.5 kg (45.2 lb) | manufacturer website |
| Power supply | 220-240 V / 50-60 Hz / 1000 W | manufacturer website |
| Boiler architecture | Heat exchanger (HX) | Declared by the brand |
| PID control | Yes | Declared by the brand |
| Water tank capacity | 1.2 l | Declared by the brand |
| Heat-up time | 600 s | Declared by the brand |
02 · Summary
Pros and cons
In favour
Worth knowing
- 1.2-litre tank: it needs frequent refilling
- 44 cm deep: narrow, but it needs a deep counter source
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What you make with it
Recipes for this machine
All recipes →
Espresso
Espresso
Seven grams, twenty-five seconds, twenty-five millilitres: Italian espresso has a written specification, and this is it.
- Dose
- 7 g
Espresso
Ristretto
The same dose as an espresso, less water in the cup. No institutional source fixes its volume — so here you will only find what is documented.
- Dose
- 7 g
Espresso and milk
Cappuccino
25 ml of espresso and 100 ml of steamed milk, in a 150–160 ml cup. The cappuccino has a specification too.
- Dose
- 7 g
Espresso and milk
Caffè macchiato
An espresso and a stain of milk. How much milk, exactly? No source declares it — and we do not invent it.
- Dose
- 7 g
Espresso
Caffè americano
An espresso lengthened with hot water. The amount of water is set by no standard: it changes from country to country and from bar to bar.
- Dose
- 7 g
Espresso
Caffè shakerato
Double espresso, sugar syrup and ice in a shaker. It has no specification: it has a house recipe.
Se non questa
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