The Rocket R58 TUNE combines a classic E61 dual boiler with a modern feature designed to make the extraction process more reproducible: TUNE technology. Instead of a completely free-flow control paddle, TUNE uses timed phases of reduced pressure at the beginning and end of the shot.
This article is a technical buying guide based on the current specifications.
The Technical Foundation
- 0.58-litre brew boiler
- 1.8-litre steam boiler
- PID control for both boilers
- TUNE technology
- Rotary pump
- E61 brew group
- Shot timer
- 1.9-litre tank or plumbed-in connection
What Is TUNE?
TUNE enables timed initial and final phases with reduced pressure of approximately 3 bar. The idea is to apply gentler pressure to the coffee puck at the beginning and to control the end of the extraction more precisely.
Unlike a manual flow-control system, you do not have to actively turn a valve during every shot. Once a sequence has been set, it can be repeated more consistently.
Is TUNE True Pressure Profiling?
It is a form of targeted pressure control, but it is not the same as a freely movable paddle. Anyone who wants to shape every moment of the shot manually will have more freedom with flow-control or paddle systems. TUNE prioritizes repeatability.
Dual Boiler
The small brew boiler is dedicated to espresso, while the 1.8-litre steam boiler handles milk and hot water. Both are controlled by PID. This enables separate temperature control and a smooth espresso/milk workflow.
E61 Brew Group
The R58 TUNE remains true to the classic Rocket character. The mechanical lever and substantial E61 group provide a familiar feel. The downside is greater thermal mass than with modern compact actively heated groups.
Rotary Pump
It operates quietly and enables a plumbed-in connection. For a high-quality, permanent coffee station, this is a significant advantage.
Tank or Plumbed-In Connection?
With the 1.9-litre tank, the machine remains flexible. A plumbed-in connection is worthwhile for a permanent location and heavy use. Appropriate filtration is essential.
Shot Timer
Having the shot time directly in view makes dialling in easier. Together with a scale, you can reliably document dose, output, and time.
Steam Performance
The 1.8-litre steam boiler provides ample capacity for cappuccino and flat white. Preparing several drinks in succession is clearly within its intended use.
R58 TUNE or Bicocca?
R58 for E61 feel and TUNE control. Bicocca for a touchscreen, actively heated group, and programmable volumetric dosing.
R58 TUNE or Profitec DRIVE?
The DRIVE offers freer flow control. The R58 TUNE focuses more strongly on programmed, reproducible pressure phases. Both have a rotary pump and plumbed-in capability.
Which Grinder?
A grind-by-weight grinder pairs excellently with a reproducible TUNE workflow using a regular coffee bean. Single dosing remains more flexible if you test different roasts.
Water and Maintenance
Backflush the E61 group, remove coffee oils from the baskets and portafilter, clean the steam wand immediately, and follow filter intervals when using a plumbed-in connection.
Strengths
- Dual boiler,
- PID for both boilers,
- TUNE pressure control,
- Rotary pump,
- Tank or plumbed-in connection,
- classic Rocket/E61 workflow.
Possible Limitations
- TUNE is less free than manual flow control,
- large E61 platform,
- higher price and space requirements,
- for espresso-only drinkers, the large steam circuit may be excessive.
Who Is the R58 TUNE For?
For home baristas who want classic E61 feel and a plumbed-in connection, but are looking for more reproducible control over the extraction process than a simple on/off shot provides.
Frequently Asked Questions
What Does TUNE Actually Do?
It enables defined phases with reduced pressure at the beginning and end of the shot.
Can the R58 TUNE Be Connected to a Water Line?
Yes. Alternatively, the internal tank is available.
Is TUNE the Same as Flow Control?
Not exactly. TUNE works in a more programmed and reproducible way, while flow control can be adjusted much more freely by hand.
Conclusion
The R58 TUNE modernizes a classic Rocket dual boiler without giving up its mechanical identity. It is especially interesting for users who love the E61 but do not want to forgo modern extraction control.
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