Dr. Pen A11 vs M9 – which should you choose?

Dr. Pen A11 and Dr. Pen M9 are two advanced microneedling pens that are similar in many ways. Both have adjustable needle depth, six speed levels, a digital display, and a rechargeable 700 mAh battery. Despite the similarities, there are some important differences that may determine which model suits you best.

In this guide, we compare Dr. Pen A11 vs M9 and take a closer look at features, needle cartridges, depth adjustment, and user experience. The biggest difference is that M9 has a more digital control system with electronic adjustment of the needle depth and intelligent recognition of compatible needle cartridges, while A11 uses a more traditional depth adjustment and offers a wider selection of needle types.

If you are completely new to the treatment, you can first read our guide about what microneedling is and how it works.

Dr. Pen A11 and M9 – quick comparison

Feature	Dr. Pen A11	Dr. Pen M9
Needle depth	0–2.5 mm	0–2.5 mm
Depth adjustment	Manual adjustment	Electronic adjustment
Speed levels	6	6
Battery	700 mAh	700 mAh
Display	Digital LED display	Digital display for, among other things, depth and speed
Needle recognition	No	Intelligent cartridge recognition
Compatible needle types	12, 18, 24, 36, 42-pin, Nano-S and Nano-R	18, 36, 42-pin and Nano-R
Suitable for those who prioritize	Wide needle selection and traditional control	Digital control and smart features

What is Dr. Pen A11?

Dr. Pen A11 is an advanced microneedling pen with six speed levels, a digital display, and adjustable needle depth from 0 to 2.5 mm.

The model has a built-in 700 mAh battery and is developed for flexible cordless use. The needle depth is adjusted directly on the pen, providing a simple and traditional solution where the user chooses the desired setting themselves.

One of A11's clearest strengths is the wide range of compatible needle cartridges. The model can be used with 12-pin, 18-pin, 24-pin, 36-pin, 42-pin, as well as Nano-S and Nano-R. This gives several options depending on the treatment area and the type of routine you want to perform.

Advantages of Dr. Pen A11

• Adjustable needle depth from 0 to 2.5 mm
• Six speed levels
• 700 mAh rechargeable battery
• Digital LED display
• Wide selection of compatible needle cartridges
• Anti-backflow membrane in compatible needle cartridges
• Stand included
• USB-C charging

If you are also considering M8S, you can read our previous comparison Dr. Pen M8S vs A11 – which should you choose?

What is Dr. Pen M9?

Dr. Pen M9 is a newer generation microneedling pen where greater focus is placed on digital control and automated functions.

Just like A11, M9 has a needle depth from 0 to 2.5 mm, six speed levels, and a 700 mAh battery. The most important difference is how the settings are managed.

M9 uses electronic adjustment of the needle depth instead of a traditional mechanical depth setting. The depth is shown on the digital display and can be adjusted step by step, making it easy to see which setting is selected.

M9 also has intelligent cartridge recognition. Compatible M9 cartridges are designed to be recognized by the pen when they are attached.

Advantages of Dr. Pen M9

• Electronically adjustable needle depth from 0 to 2.5 mm
• Six speed levels
• 700 mAh rechargeable battery
• Digital display for clear control of settings
• Intelligent recognition of compatible M9 cartridges
• Can be used wirelessly or connected with a cable
• USB-C charging
• Stand included

What is the difference between Dr. Pen A11 and M9?

At first comparison, the models look quite similar. Both have the same maximum needle depth, six speed levels, and the same battery capacity. The differences become clearer when you look at how the pens are controlled and which needle cartridges they use.

1. M9 has electronic depth adjustment

One of the biggest technical differences is how the needle depth is set.

On A11, the depth is adjusted manually directly on the pen. M9 instead uses electronic depth adjustment where the selected setting is shown digitally on the screen.

This does not mean that M9 can work deeper than A11 – both go up to 2.5 mm – rather, the difference is about how the depth is controlled and adjusted.

Regardless of model, needle depth should always be chosen based on the treatment area, the skin's sensitivity, and your level of experience. A greater depth does not automatically mean a better result. Feel free to read our complete guide to needle depth for microneedling.

2. M9 recognizes its needle cartridges

M9 uses its own cartridge system with intelligent cartridge recognition. The pen is designed to recognize compatible M9 needles when they are attached.

At the same time, this means that M9 uses model-specific cartridges. Needle cartridges from, for example, A11, M8S, or other Dr. Pen models should therefore not be used with M9.

3. A11 has more needle types to choose from

A11 has a wider range of compatible cartridges. For this model, there are 12-pin, 18-pin, 24-pin, 36-pin, 42-pin, Nano-S, and Nano-R.

M9 instead has four main options: 18-pin, 36-pin, 42-pin, and Nano-R.

For those who appreciate being able to choose between many different needle configurations, A11 therefore has an advantage. M9 offers fewer variants but instead combines them with its intelligent cartridge system.

4. Both have a 700 mAh battery

Unlike the comparison between, for example, M8S and A11, there is no difference in battery capacity here. Both A11 and M9 have a rechargeable 700 mAh battery.

The battery size therefore does not need to be a deciding factor when choosing between these two particular models.

5. Both have six speed levels

Even when it comes to speed settings, the models are close to each other. Both A11 and M9 offer six different speed levels.

The difference therefore lies less in how many speeds you can choose and more in M9's digital control compared with A11's more traditional setup.

Do A11 and M9 use the same needles?

No. Dr. Pen A11 and M9 use different needle cartridges, and the cartridges are not interchangeable between the models.

For A11, there are needle cartridges for A8S, A11, and M8S in the following variants:

• 12-pin
• 18-pin
• 24-pin
• 36-pin
• 42-pin
• Nano-S
• Nano-R

M9 instead uses model-specific needle cartridges for Dr. Pen M9:

• 18-pin
• 36-pin
• 42-pin
• Nano-R

The needle cartridges are intended for single use and should be replaced after each treatment.

A11 or M9 for beginners?

Both models can be used by people who want to start with microneedling at home, but they offer two slightly different ways to control the treatment.

A11 has a more traditional setup with manual adjustment of needle depth and a wide selection of needle cartridges. For those who appreciate a simple and familiar design, this can be an advantage.

M9 instead provides more information and control through the digital system. Electronic depth adjustment and cartridge recognition reduce the number of mechanical settings that need to be made directly on the pen.

However, neither of these features replaces the need to understand proper hygiene, needle depth, and treatment technique before you begin.

A11 or M9 for more experienced users?

Here too, the choice mainly depends on what type of control you prefer.

A11 may be of interest if you want access to a larger number of cartridge options and want to control the depth setting yourself in the traditional way.

M9 may instead suit you if you appreciate digital features and want to be able to view and change the needle depth electronically directly on the device.

Which model has the best range of needle cartridges?

Looking only at the number of needle variants, A11 has a larger selection. It includes both 12-pin and 24-pin as well as two different nano options in addition to 18-, 36-, and 42-pin.

M9 has fewer cartridge options but covers the most common categories with 18-, 36-, and 42-pin as well as Nano-R.

The important thing is therefore not necessarily to have as many cartridges as possible, but that the needle types you actually intend to use are available for the model you choose.

A11 or M9 for the face?

Both A11 and M9 make it possible to adjust needle depth and speed when used on the face. For this area of use, there is therefore no decisive difference based solely on maximum needle depth or number of speed levels.

The difference instead lies in how you want to control the pen. A11 provides traditional manual control, while M9 offers electronic depth adjustment and digital feedback.

The choice of suitable needle cartridge, correct technique, and a cautious needle depth is more important than which of the models is used.

A11 or M9 for the scalp?

Both models can be used on the scalp when a suitable cartridge, setting, and technique are used.

Here too, the practical difference is above all the choice between A11's wider needle range and M9's digital control system. Which function is most important depends on how you plan to use the pen.

Dr. Pen A11 vs M9 – which should you choose?

Dr. Pen A11 may suit you if you:

• want a large selection of compatible needle cartridges
• prefer traditional manual adjustment of needle depth
• want to be able to choose between 12-, 18-, 24-, 36-, and 42-pin
• want both Nano-S and Nano-R as options
• want an advanced but relatively traditionally controlled microneedling pen

Dr. Pen M9 may suit you if you:

• want electronic adjustment of needle depth
• appreciate digital control of the settings
• want intelligent cartridge recognition
• do not need as many different needle variants
• prioritize smart features and a more digital user interface

Technically, the models are close to each other when it comes to battery, speed levels, and maximum needle depth. The most important choice therefore stands between A11's broader cartridge range and traditional control and M9's electronic depth adjustment and smart cartridge system.

Frequently asked questions about Dr. Pen A11 and M9

What is the biggest difference between Dr. Pen A11 and M9?

The biggest difference is the control system. A11 uses traditional manual adjustment of needle depth, while M9 has electronic depth adjustment and intelligent recognition of compatible M9 cartridges. A11 also offers a larger selection of needle cartridges.

Do Dr. Pen A11 and M9 have the same needle depth?

Yes. Both models have an adjustable needle depth from 0 to 2.5 mm. The difference is that the depth is adjusted manually on A11 and electronically on M9.

Do A11 and M9 have the same battery?

Both models have a built-in rechargeable 700 mAh battery.

Can you use A11 needles on Dr. Pen M9?

No. M9 uses its own model-specific cartridges that are developed for the pen's cartridge recognition. A11 uses a different cartridge series that is also compatible with A8S and M8S.

Which needles are available for Dr. Pen M9?

Dr. Pen M9 is compatible with 18-pin, 36-pin, 42-pin, and Nano-R. The cartridges are specially developed for M9 and are intended for single use.

Which model has the most needle cartridges to choose from?

A11 has the broader range. The model is available with 12-pin, 18-pin, 24-pin, 36-pin, 42-pin, Nano-S, and Nano-R. M9 offers 18-pin, 36-pin, 42-pin, and Nano-R.

Is M9 better than A11?

Not generally. M9 has more digital control with electronic depth adjustment and cartridge recognition, while A11 offers a larger selection of needle cartridges and more traditional control. Which model suits you best depends on which features you prioritize.

Summary

Dr. Pen A11 and M9 are two advanced microneedling pens with several shared features. Both offer six speed levels, adjustable needle depth up to 2.5 mm, and a rechargeable 700 mAh battery.

A11 stands out primarily for its large selection of needle cartridges, while M9 offers more digital control through electronic depth adjustment and intelligent cartridge recognition.

What you choose therefore has less to do with raw performance and more to do with how you want to work with the pen. If you prefer many cartridge options and traditional control, A11 may be an interesting option. If instead you want a more digital control system, M9 offers features that A11 lacks.

If you want to compare more models, you can see our full range of Dr. Pen microneedling pens.