Start with how you want to make adjustments. ALPHA lets you change the stroke electronically while it runs. PRO4 has a mechanically adjusted stroke and a wired hand controller. GIGOLO combines a lighter machine with App control, while keeping stroke adjustment mechanical.
These three models share a mechanical attachment system. TREMBLR uses a separate pneumatic system with a Receiver and Silicone Sleeve, so it deserves a different starting question: which type of machine are you looking for?
A quick way to narrow your choice
| Your priority | Model to look at first | The difference that matters |
|---|---|---|
| Adjusting stroke as well as speed without stopping for a mechanical stroke change | ALPHA | Electronic stroke adjustment from 25 to 133 mm, including adjustment during operation |
| A wired hand controller and a mechanical stroke range up to 152 mm | PRO4 | Speed control on the hand controller; stroke set on the machine |
| App and remote control in a lighter mechanical machine | GIGOLO | Approximately 6.5 kg net weight, with a mechanically adjusted 25–102 mm stroke |
| A pneumatic system with a separate Receiver | TREMBLR | Air-pressure changes move the flexible Silicone Sleeve inside the Receiver |
Use these priorities to make a shortlist. The sections below explain what each choice means in practice.
Compare the three mechanical models
| Feature | ALPHA | PRO4 | GIGOLO |
|---|---|---|---|
| Stroke range | 25–133 mm | 25–152 mm | 25–102 mm |
| Stroke adjustment | Electronic; adjustable during operation | Mechanical; stop and disconnect power before adjustment | Mechanical; stop and disconnect power before adjustment |
| Working speed | 0–approximately 220 RPM | 0–approximately 220 RPM | 0–approximately 220 RPM |
| Output torque | 4 N·m | 4 N·m | 2 N·m |
| Supplied controller | Wireless remote | Wired hand controller | Wireless remote |
| F-Machine Connect App | Yes | No | Yes |
| App controls | Start, pause, speed and stroke depth | — | Start, pause and speed |
| Remote control through the App | Yes | No | Yes |
| Net weight | Approximately 11 kg | 12.8 kg | Approximately 6.5 kg |
The stroke ranges describe machine movement. Consider the attachment, its position and your setup separately when deciding how to use that range.
ALPHA: change the stroke while it runs
ALPHA is the model to consider if you want to adjust stroke length from the controls. Its stroke can be changed electronically across a 25–133 mm range during operation. The F-Machine Connect App controls start, pause, speed and stroke depth, and a wireless remote is supplied for local control.
This is the main distinction between ALPHA and the other two mechanical models. With PRO4 and GIGOLO, changing the stroke means stopping, disconnecting power and making a mechanical adjustment.
ALPHA also supports remote control through the App. When the App is connected to the machine, the wireless remote cannot control it at the same time. The App connected to the machine can end remote control and limit its maximum speed.
Explore ALPHA · Configure ALPHA · ALPHA support and manuals
PRO4: set the stroke on the machine
PRO4 suits a preference for a wired hand controller and mechanical stroke adjustment. The controller handles start, pause and speed. Its 25–152 mm stroke is adjusted on the machine, with the machine stopped and power disconnected.
PRO4 has the longest maximum stroke of these three models. ALPHA and PRO4 share a stated output torque of 4 N·m and a working speed of 0–approximately 220 RPM; their control systems are different.
Choose PRO4 because that control arrangement suits you. It does not support the F-Machine Connect App, a wireless remote or remote control.
Explore PRO4 · Configure PRO4 · PRO4 support and manuals
GIGOLO: less weight, with App control
GIGOLO is worth a look if the weight of the machine matters to your setup. At approximately 6.5 kg net, it weighs less than ALPHA or PRO4. It includes a wireless remote and supports the F-Machine Connect App for start, pause and speed, as well as remote control through the App.
Its stroke range is 25–102 mm, adjusted mechanically. App control does not change this: stop the machine and disconnect power before adjusting the stroke.
As with ALPHA, connecting the App means the wireless remote cannot control the machine simultaneously. The App connected to the machine can end remote control and limit its maximum speed.
Explore GIGOLO · Configure GIGOLO · GIGOLO support and manuals
Where TREMBLR fits
TREMBLR uses a pump, Hose and separate Receiver. Air-pressure changes move a flexible Silicone Sleeve inside the Receiver. It has its own accessories and does not use the mechanical push rods, Quick Connect or Vac-U-Lock attachments fitted to ALPHA, PRO4 and GIGOLO.
TREMBLR supports the F-Machine Connect App for start, pause, speed and suction adjustment, and includes a wireless remote. Its stated speed is 0–180 RPM. Comparing its RPM directly with a mechanical model’s RPM will not tell you which type of system you will prefer.
If this is the type of machine you want, begin with TREMBLR and its Receiver system. The M, L and XL sizes describe the Receivers and matching Sleeves, rather than different TREMBLR machines.
Explore TREMBLR · Configure TREMBLR · Understand Receiver sizes and Kits
Check the attachments you want to use
ALPHA, PRO4 and GIGOLO support F-Machine Quick Connect and use the mechanical attachment range. A F-Machine Vac-U-Lock Adapter connects them to Doc Johnson Vac-U-Lock products. Other third-party attachments need their interface, dimensions, weight, materials and stability checked individually.
TREMBLR Receiver, Sleeve, Cap, Hose and 525 Shorts belong to its separate pneumatic system. They are not attachments for the three mechanical models.
If you already own an attachment and want to keep using it, contact support before choosing a machine. Give the attachment’s name and connection details so its compatibility can be checked.
Common questions
Does App control mean the stroke can be changed in the App?
For ALPHA, yes. GIGOLO’s App controls start, pause and speed; its stroke is adjusted mechanically. TREMBLR’s App controls speed and suction in its pneumatic system. PRO4 does not support the App.
Do I need a phone for local control?
ALPHA, GIGOLO and TREMBLR include wireless remotes for local control. PRO4 uses its wired hand controller. The App is an additional control option on the supported models.
Are there built-in preset patterns?
No. The current ALPHA, PRO4, GIGOLO and TREMBLR models do not have preset modes.
Are any of these battery-powered?
No. All four models operate while connected to power.
Which model should I choose if I am still unsure?
Decide first whether you want a mechanical machine or TREMBLR’s pneumatic system. For the mechanical models, the next useful questions are whether you want electronic stroke adjustment, App control, a wired controller or a lighter machine. Ask us about your shortlist if you would like help working through those choices.