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Rocket Espresso R Nine One & Mahlkonig E64 WS Bundle Black

Full manufacturer warranty

Rocket Espresso R Nine One & Mahlkonig E64 WS Bundle

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$8,189

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Both for $8,189

Color: Black

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Key specs

1 groupGroup heads

Dual boilerBoiler system

Needs a 15A, 110-120V circuitPower · 1600W

16.1 in wideSize · 19.9 in deep · 16.9 in tall · 104.5 lb

3.6L (1 gal) Steam / 1.9L (0.5 gal) Brew steam boilerSteam

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About the Rocket Espresso R Nine One & Mahlkonig E64 WS Bundle

The Rocket Espresso R Nine One & Mahlkonig E64 WS Bundle pairs a dual boiler espresso machine with pressure profiling and a grind-by-weight home espresso grinder, for home baristas who want a complete setup with control over both the grind and the shot.

The Rocket R Nine One has a fully saturated group and digital PID temperature control. Its pressure profiling system lets you set pre and post-infusion with five programmable profiles, or run full manual control with the Rocket paddle. It can be plumbed to a direct water connection or run from the built-in reservoir.

The Mahlkonig E64 WS weighs coffee as it grinds and stops at the target dose. It grinds on 64 mm special steel flat burrs and holds 250 g of beans. With the Mahlkonig Sync Scale (not included), Grind-by-Sync adjusts grind size from how the last shot ran; grind size can also be set manually. The Mahlkonig Sync app handles firmware updates and logs each grind.

INCLUDED:

1 Rocket Espresso R Nine One Espresso Machine (Black, or Chrome)
1 Mahlkonig E64 WS Espresso Home Grinder (Black, or White)

FEATURES:

R Nine One: dual boiler, 1.9 L (0.5 gal) brew boiler and 3.6 L (1 gal) steam boiler
R Nine One: 16.1 in wide, 19.9 in deep, 16.9 in tall, 104.5 lb net, 110 to 120 V, 1600 W
E64 WS: grind-by-weight and Grind-by-Sync, 64 mm special steel flat burrs at 1950 rpm
E64 WS: 2 to 3.5 g/s grind rate, 250 g hopper, 100 to 120 V, 200 W, 12.8 lb net

Real setups from our customers

Specifications

The set
Power	Rocket R Nine One: 1600W Mahlkönig E64 WS: 200 W
Warranty	Rocket R Nine One: 12-month parts warranty Mahlkönig E64 WS: 1-year
Espresso Machine · Rocket R Nine One Full page
Brewing
Group heads	1
Boiler system	Dual Boiler
Steam boiler capacity	3.6L (1 gal) Steam / 1.9L (0.5 gal) Brew
Physical Measurements
Width	16.1 in
Depth	19.9 in
Height	16.9 in
Net weight	104.5 lb
Power
Voltage	110-120V
Wattage	1600W
Amperage	15A
Certifications
Certifications	Not NSF certified (home use)
Model & Series
Series	R Nine One
Warranty	12-month parts warranty
Grinder · Mahlkönig E64 WS Full page
Performance
Burr diameter	64 mm
Burr material	Special steel
Burr speed	1950 rpm
Grinding capacity	2 - 3.5 g/s (fine - coarse)
Hopper capacity	0.6 lb (250 g)
Dosing method	Grind-by-Sync, Grind-by-Weight
Connectivity	Cloud
Automatic grind adjustment	Yes
Physical Measurements
Width	6.06 in
Depth	8.58 in
Height	15.35 in
Net weight	12.8 lb
Power
Voltage	100-120V
Frequency	50/60Hz
Wattage	200 W
Phase	1
Model & Series
Series	E64 WS
Warranty	1-year
More specs
Sync App	Mahlkönig Sync app

Manuals & downloads3

ManualRocket Espresso R Nine One & Mahlkonig E64 WS Bundle

BrochureRocket Espresso R Nine One & Mahlkonig E64 WS Bundle

Questions about the Rocket Espresso R Nine One & Mahlkonig E64 WS Bundle9

What kind of boiler system does the Rocket Espresso R91 use?

The R91 features a dual-boiler layout with a dedicated brew boiler (about 0.5 gal) and a steam/service boiler (about 1 gal), allowing simultaneous brewing and steaming with excellent stability.

Is the group head of the R91 designed for high thermal stability?

Yes. It uses a fully saturated group head design that circulates hot water within the group for consistent temperature and uniform extraction.

Does the R91 support pressure profiling?

Yes. The machine offers up to five programmable pressure profiles plus manual control via the paddle, letting you shape pre-infusion, pressure ramps, and declines for each shot.

Can the R91 be used with a water reservoir or plumbed directly?

Yes. The R91 supports both internal water-tank operation and direct-plumbed installation, offering flexibility for homes or cafés.

What kind of user interface does the R91 have?

It includes a color touchscreen display for adjusting brew temperature, volumetric dosing, pressure profiles, and other parameters in a clear, easy-to-navigate layout.

What kind of user or setting is the R91 designed for?

The R91 is built for advanced home baristas, small cafés, or boutique roasting labs seeking precise control, pressure profiling, and commercial-grade steam power in a compact format.

What installation or space considerations should I know?

The machine weighs about 104 lb and measures roughly 16.1 in (W) × 19.9 in (D) × 16.9 in (H). It requires proper water filtration and a grounded 110–120 V power supply.

How do I maintain and service the R91?

Routine maintenance includes daily back-flushing, steam-wand cleaning, descaling when needed, and periodic inspection of the pump and boiler system by a qualified technician.

Does the R91 support volumetric dosing?

Yes. It includes volumetric shot programming, allowing you to set repeatable volumes for each profile to ensure consistent results.