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The Stone HX Espresso Machine features a sleek black metal exterior, reflective front, and visible steam wand. A yellow banner in the corner states “More Colors Available.”. © 2025 1st-line.com
The Stone HX Espresso Machine in silver stands on a grey countertop beside a modern sink, while green hanging plant leaves descend from above against a speckled, light-colored wall. © 2025 1st-line.com
A white Stone HX Espresso Machine with a portafilter and digital gauge sits on a light gray kitchen countertop near a clear glass, a green trailing plant, and the sleek Stone HX Coffee Maker. © 2025 1st-line.com
The Stone HX Espresso Machine, featuring a stainless steel finish, steam wand, and portafilter for professional-quality brewing, sits on a stone countertop against gray textured panels. © 2025 1st-line.com
The Stone HX Espresso Machine, featuring a metallic front and black sides, sits on a teal surface with a yellow mug, cookies, and a blue vase nearby, all set against a peach-colored background. © 2025 1st-line.com
The Stone HX Espresso Machine rests on a light wooden countertop with glass jars, a potted succulent, and dried grasses—creating an inviting coffee corner against a neutral wall. © 2025 1st-line.com
The Stone HX Espresso Machine, crafted from stainless steel, sits on a sleek metallic countertop beside a minimalist sink and matching faucet, bringing a contemporary feel to the kitchen. © 2025 1st-line.com
The image displays the internal components of the Stone HX Espresso Machine, featuring tightly arranged tubes, wires, brass fittings, and metal parts within its open metal casing. © 2025 1st-line.com
A close-up view inside the Stone HX Espresso Machine showcases its cylindrical copper boiler with connecting pipes and wires, along with surrounding mechanical and electronic components. © 2025 1st-line.com

Stone HX Espresso Machine

3 reviews

$1,799.00 $1,299.00

Compact HX machine with a less than 10 minute heat up time!

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Overview

Stone HX Espresso Machine

Experience professional-grade performance in a compact, ultra-efficient design. Meet the Stone HX, heat exchange espresso machines that are ready to use in just 10 minutes! All Stone HX espresso machines feature a new style grouphead. They boast 100% metal construction both inside and out, ensuring durability and top-notch quality. Crafted with espresso connoisseurs in mind, every detail enhances your coffee experience. Available in multiple color and slab options, its functionality and style transforms your kitchen into a genuine espresso bar. Handcrafted in Milan, each Stone model is a testament to exquisite craftsmanship, catering to coffee lovers worldwide.

Videos

3 videos found
Espresso machine with a focus on fixing a clogged gicleur valve, featuring the brand name "STONE" prominently displayed.
Stone Espresso: Fixing A Clogged Gicluer Valve
Espresso machine with visible components and tools, featuring "ESPRESSO MACHINE" and "Top & Side Panel Removal" text, related to 1st-line Equipment's educational video series on espresso machine maintenance.
TechTip: Removing the Top and Side Panels on the Stone HX Espresso Machine
Descaling the Stone espresso machine with visible internal components and a milk frothing pitcher, part of educational content on espresso machine maintenance.
Descaling the Stone Espresso Machine

Features

New Style Grouphead

With its compact design, Stone has redesigned their grouphead. You start coffee extraction by rotating the black dial on top. This keeps your hands up and out of the way. Inside the grouphead is a built-in heating element that ensures a hot espresso shot.

A close-up of the Stone HX Espresso Machine shows a black, square-shaped blind filter on the portafilter, used for cleaning or backflushing the machine. © 2025 1st-line.com
Close-up of the Stone HX Espresso Machine’s interior, featuring a large copper boiler, tubes, wires, and metal components with the casing partially open to reveal its internal parts. © 2025 1st-line.com

Heat Exchange System

This HX’s 1.5 liter copper boiler paired with a powerful 1200 watt heating element results in a very fast warmup time, approximately 10 minutes! There are 2 safety thermostats to prevent from overheating.

Steam Wand

The valve angles out to the right of the machine to keep your hand away from the grouphead. The multidirectional wand has a 2 hole steam tip for a nice slow gradual buildup of microfoam.

Close-up of a Stone HX Espresso Machine with portafilter handle attached; a tamper and steam wand are also visible. The background is mostly white. © 2025 1st-line.com
A close-up of the pressure gauge on the Stone HX Espresso Machine displays a 0–3 bar scale. The needle hovers just above 1 bar, with STONE printed at the bottom of the gauge. © 2025 1st-line.com

Steam Pressure Gauge

The optimal steam pressure is between 1 and 1.5 bars. Watch how fast your machine recovers when you’re done steaming.

Vibration Pump

Mounted on rubber brackets to help dull the vibrating operation. Less costly to replace compared to a rotary vane pump.

Close-up view of mechanical and electrical components inside the Stone HX Espresso Machine, featuring metal pipes, connectors, a cylindrical brass part, and various wires and tubes. © 2025 1st-line.com
A stainless steel ice bin with a hinged lid is open to show two white compartments inside. Perfect next to your Stone HX Espresso Machine, the bin sits against a gray textured background. © 2025 1st-line.com

Tank Reservoir System

Easy to fill. Easy to clean.

Specifications

Brand

Stone
Height (inches)

14, approximate
Weight (pounds)

46
Width (inches)

9, approximate
Depth (inches)

17.5, approximate
Wattage (watts)

1200
Voltage (volts)

110 – 120
Boiler capacity (liters)

1.5
Tank capacity (liters)

1.2

Notes

Portafilters included: The Stone comes with 1 dual spout portafilter. The instruction manual makes reference to a single spout portafilter, but that is not included.

General Espresso Machine Notes/Warnings:

  • Upon first use (tank/reservoir models): On the initial start-up (or after a long period of non-use), it is important to make sure the pump is removing water from the tank. When the machine is powered on, you will hear the pump running. After 5 seconds, squeeze the in-line hose in the tank (usually the longest hose, has a particle filter attached). if you hear a different sound, this means the pump is working correctly. If not, immediately power down the machine and contact us. For more information, visit this page General Manual Pump Priming.
  • Electrical: To avoid electrical damage to this espresso machine which is not considered a manufacturer's defect, please acquire and install a single-outlet surge suppressor rated at 1080 joules or higher. Without the recommended surge suppressor, the espresso machine can be damaged at the power switch, the electronics, the heating element, the pressurstat, or the wiring inside. For more information, visit this page Power Protection.
  • Water: To increase the useful life and not damage your espresso machine, please use softened water. Softened water is water without calcium and magnesium, but still has other minerals for espresso extraction. Do not use distilled, purified, or reverse osmosis water as these types of water create oxidation with the metals and cause the same damaging effects as limescale. For more information, visit this page Water Choice.
  • Descaling: We do not recommend descaling unless there is an issue with the espresso machine. Too much descaling can eat away at the metals and gaskets inside an espresso machine. As a preventative measure, we recommend using softened water as explained in the bullet point above.
  • Backflushing: This procedure of cleaning the grouphead will need to be performed from time to time. For more information, visit this page Espresso Machine Backflush – Why 50?

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FAQ

Submit Questions for FAQ

Please review the FAQ to confirm the question or topic was not previously covered. Questions and topics can be submitted to F.A.Q. Any followup questions for FAQ should be requested as a separate FAQ submission.

    Since day one the machine I bought to use as my traveling machine and therefore have used rarely tens to vent pressure briefly in between uses while the machine is sitting on but not being used until the next straw. I suspect it might be an overpressure Barrel or the vacuum release now. Should I be expecting this to happen the, the machine is making coffee just fine. Or do I need to open the machine up and find a pressure stack and downward adjusted slightly to avoid this?
  1. 0 votes
    Q Since day one the machine I bought to use as my traveling machine and therefore have used rarely ...... Read more answer now
    Asked on October 4, 2025 10:48 am
    A

    On this particular model, the pressurstat may start to have limescale build up, and the pressurstat may be sticking.This owuld be an overheat and would sound like a locomotive as it does not stop.

    If it stops, the vacuum breaker/bleeder valve is the first place where limescale exhibits itself and tends to leak on and off. This part can usually be descaled outside of the machine. With the machine cold and unplugged from the electrical outlet, the top panel would need to be removed, the complete bleeder valve assembly removed, then the bleeder valve disassemble for descaling. Assemble after descaling, then use plumbers tape for the threads (about 3-4 rotations) then insert into the appropriate location. Test the machine.
    2. I bought a stone espresso machine a little while ago and after a few months it has started to whistle quite loudly on start up and I am not quite sure what to do. Thanks
  2. 0 votes
    Q I bought a stone espresso machine a little while ago and after a few months it has started to whi...... Read more answer now
    Asked on January 23, 2025 12:16 pm
    A

    An overheat situation, created by hard water, will have the boiler safety valve open up and whistle. This is a safety feature for the boiler to not explode.

    The issue is that hard water, or limescale in the water, creates a situation where the diaphragm can not sense the steam boiler pressure. In some cases, the limescale will freeze the diaphragm in position where there is no heat allowed. In most cases, limescale freezes the diaphragm where it will not shut off the heating, excessive heat builds up too much steam, then the safety valve on the boiler opens.

    This needs to be corrected before further use as this steam can hit and damage other electrical components.

    Picture of Pressurstat on Stone HX espresso machines

    Please note this is not a warranty issue but a water quality issue.

    With the machine cold and unplugged from the electrical outlet, please remove the reservoir and right side panel. The tan colored pressurstat will need to be removed from its attached pipe or the looping pipe can be removed from the portion connected to the T pipe connection as pictured. The wire connections should be photographed and then disconnected so the assembly can come out.

    Descaling solution, not Cafiza, or white vinegar should be poured into the pipe or the opening of the pressurstat and allowed to sit for a few hours. This process should happen at least 3-4 times. The pipe and opening of the pressurestat should be rinsed. PLEASE MAKE SURE ONLY HE OPENING GETS DESCALER OR WATER IN THE OPENING ONLY. IF YOU GET SOLUTION ON THE ELECTRICAL PORTION, THE PART CAN BE DAMAGED. IF YOU DOD< PLEASE ALLOW THE PART TO AIR DRY FOR A MINIMUM OF 24 HOURS.

    Place all the parts back in and test the machine.

    After the correction, the water needs to be softened. Do not use distilled, RO (reversed osmosis) nor purified water and especially do not use any water with added minerals in a packet as these waters create overheat issues as explained here.
    3. Hi! I purchased my stone in October and love it! However, within the past weekend, the pressure gauge has seemingly stopped working (shows hand stuck at 0) even though the machine will startup for around 20-30 minutes before I try to get an extraction. I did try to do my routine anyway, and it worked with no issues- but would like to know how to fix the gauge in order to get it to start working properly again and showing between 1-2 bar pressure. Any help you have is greatly appreciated!
  3. 0 votes
    Q Hi! I purchased my stone in October and love it! However, within the past weekend, the pressure g...... Read more answer now
    Asked on December 2, 2024 10:58 pm
    A Chances are there is limescale in the capillary tube. We have made a video and it will be posted as soon as our videographer has completed it. Please note that the gauge is for steam pressure, not pump pressure.
    4. I have a question regarding my Stone Espresso machine. I am currently experiencing an issue where the machine is under pressure but the pressure gauge doesn’t show that it has any pressure at all. Typically I wait 20-30 minutes to use the machine until the pressure gets between 1-2, but unfortunately this weekend the machine pressure gauge has stopped working. It is still pouring a shot well, and frothing milk well, just want to know if there is a troubleshoot or a fix to this problem? Thanks!
  4. 0 votes
    Q I have a question regarding my Stone Espresso machine. I am currently experiencing an issue where...... Read more answer now
    Asked on December 2, 2024 1:26 pm
    A

    We are sorry to read this. Stopped working is not specific enough. It can mean stuck at zero, stuck at a certain pressure reading, or moving erratically, Please pose a new question.
    5. How do I know when the machine is fully heated and ready to use? I was able to pull 3 great espresso shots successfully! I know it is a short heat up time of 10 minutes, however I'm not sure where on the machine it indicates it has heated up and is ready for use. Thank you!
  5. 0 votes
    Q How do I know when the machine is fully heated and ready to use? I was able to pull 3 great espre...... Read more answer now
    Asked on October 10, 2024 5:02 pm
    A

    The machine is ready after the steam pressure gauge reaches 0.9 bar of pressure.