A tattoo may represent a lot of things. It is not just the window to a person’s personality,  it also shows how the tattoo artist interpreted their client's design. Tattoo artists who care for their clients, and who make an effort to know the needs and wants of the customers will go a long way. 

A great tattoo artist gives only the best service to their clients. The make sure they have the right skills and the right equipment. This also includes the equipment used to power their machines. 

Here are some of the things you need to check off your "finding-the-perfect-power-supply" list. 

1. Determine the voltage required. Tattoo power supplies have a wide range of volt outputs. Some are capable of running as low as 3 and as high as 12 to 15. Some portable power supplies can run to as low as 1.5 volts and larger power supplies can run to as high as 20 volts. Obviously, the higher the voltage would mean more power will be supplied. 

2. Choose the type of power supply. Analogue and digital power supplies come in both regulated and unregulated models. Your confidence level and power output reading are factors in choosing the right power supply. It is very important to look at each type available. A digital power supply gives a more accurate reading. The power is easier to check and see, even while you’re working. However, digital power supplies are more expensive. Regulated machines are pricey, but it provides you with a constant voltage even if the tattoo machine isn't running. 

3. Consider the fluctuations. The amount of power required at any given time during a tattoo may change depending on the amount of pressure being applied as the tattoo needle pierces the skin. Many regulated machines will help compensate for these fluctuations. Other machines do not. Ask, research, and pick which power supply you feel most comfortable with. 

4. Take into consideration your regular tattoo machine. Some tattoo power supplies are only recommended for a coil operated tattoo machine, while others can be used for a rotary machine and still others can be used for both. 

5. Think of the number of machines you can hook up. Many tattoo artists prefer to set up a separate machine for lining and another for shading. It's convenient to have a power supply that allows you to plug in two machines at once and just flip a switch to change while the tattoo session is ongoing. 

6. Contemplate size, weight and portability. A small tattoo power supply doesn’t automatically mean the power is suppressed. A lot of manufacturers sell compact units for those who want to save space, or for the tattoo artists who travel often.

7. Factor in price. Before deciding if the price is right, carefully take into consideration all of the factors above. You may be able to find more than one reliable machine that meets or exceeds all of your needs. If this is the case, then you start eliminating based on price. 

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