Complete guide: Critical XRR Power Supply
The Critical XRR power supply is the digital power supply from the American brand Critical Tattoo, designed for artists who want fine control over voltage and a modern, easy-to-read interface right at the workstation. It is compatible with both coil machines and rotary machines, thus covering most configurations used in a studio. The color TFT screen and capacitive touch interface replace classic buttons, and the included magnetic mounting system allows you to place the power supply right next to you, in the position that suits you.
How to use
- Attach the power supply to the included magnetic mount, choosing one of the four available mounting positions so that the screen is visible and within reach.
- Connect the US power cord (or the included switching adapter) to the outlet — the power supply has universal input 90–240V AC, 50/60Hz, so it works on the Romanian grid as well.
- Connect the tattoo machine's clipcord to the Amphenol connector on the power supply.
- Turn on the power supply and use the touch interface to set the working voltage; if the machine starts hard, activate Jumpstart mode for an extra boost at startup.
- Save your favorite presets on the dedicated buttons so you can quickly switch between different voltages without having to adjust from scratch each time.
- Choose the display mode (session, run time, or hybrid billing view) if you want to track the session time and cost directly on the screen.
- Cover the power supply with a disposable protective barrier (machine bag or bottle bag) before each procedure — the casing is designed for this type of wrapping.
- At the end, turn off the power supply, disconnect the power cord, and disinfect the outer surface according to the studio's hygiene protocol.
Tips from us
- Choose the screen color scheme according to the light in the booth — a darker background is less tiring on the eyes during long sessions.
- The non-volatile memory retains voltage presets even when power is interrupted, so you don't have to re-enter the values after each startup.
- Position the power supply so that the clipcord is not stretched or twisted — this protects the Amphenol connector and the cable from premature wear.
- If you work with multiple machines in sequence, use the saved presets to quickly switch between voltages instead of adjusting manually each time.
- Periodically check the Amphenol connector and power cord for signs of wear; a loose connection can affect the consistent delivery of current to the machine.
Warning: The power supply is an electrical device connected directly to the tattoo machine, so follow basic electrical safety rules: do not use it with a damaged cord, do not expose it to moisture, and do not attempt repairs yourself. For protection against cross-contamination, cover the power supply with a disposable barrier at each procedure and disinfect the outer surface after each client, according to standard tattoo hygiene protocol. If the power supply shows signs of malfunction (unstable display, unexpected voltage fluctuations, burning smell), unplug it and do not use it again until it has been checked.
Frequently asked questions
What tattoo machines is the Critical XRR power supply compatible with?▾
It is compatible with both coil machines and rotary machines, so it can power most types of machines used in a studio.
How do I protect the power supply from cross-contamination between clients?▾
Cover it with a disposable protective barrier (machine bag or bottle bag) before each procedure — the casing is designed for this type of wrapping — and disinfect the outer surface after removing the bag, at the end of each session.
What happens if the power goes out while working?▾
The power supply's non-volatile memory retains the saved voltage presets, so you don't lose the configured settings when the power is interrupted.
Can I use the power supply without a foot pedal?▾
Yes — the power supply has a foot pedal override button, which allows continuous operation without needing a connected pedal.
Does the power supply work with Romanian outlets?▾
Yes, it has universal input 90–240V AC, 50/60Hz, so it connects directly to the Romanian electrical grid, using the included power cord or switching adapter.
What is included in the package when purchasing?▾
The set includes the Critical XRR power supply, the magnetic mounting system, an information insert, and a US power cord.
Product description
Critical Tattoo XRR Power Supply with Magnetic Mount and New Hybrid Billing View Critical Tattoo strives to provide tattoo artists with American-made products that are innovative, elegant, and above-all satisfactory. Maintaining the favored qualities of former Critical Tattoo Power Supplies, the Critical Tattoo XRR Power Supply offers additional features that allow for optimally efficient tattooing. As with prior models, artists can enjoy an easy-to-read, full color display screen with the option to select your preferred color scheme. The touch user interface allows easy adjusting of the voltage, selecting presets, and other configurable options with the lightest touch. This power supply has a precision regulated set point voltage of 0–1v. Like other XR models, this tattoo power supply includes the new hybrid billing view, allowing artists to view their session time and cost simultaneously; this hybrid billing view automates user input. Another new feature of this power supply includes the magnetic mounting system. This mounting system, which is included with your purchase, can be rotated into one of four different positions for a totally configurable setup. This power supply must be mounted before tattoo procedures. This mounted design is created for ultimate flexibility and also ensures the power supply can be easily bagged with standard machine or bottle bags for optimal protection against cross contamination. This listing is for one Critical Tattoo XRR Power Supply, complete with the mounting system, an informative insert, and a US power cable. Specifications: Billet aluminum CNC-machined housing Compatible with all coil and rotary machines Easy-to-read, full-color TFT display; configurable color scheme Designed to be mounted for user flexibility and convenience Capacitive-touch user interface; tuned carefully Display screen shows time of day and voltage output Session meter based on user set hourly rate: session mode, run time mode, or NEW hybrid billing view (automates user input, shows billing and session time simultaneously) Non-volatile memory ensures voltage presets are maintained even when power is removed Assign jumpstart feature/maintained pedal modes to preset/output buttons Precision regulated set point voltage 0–1v 0.1 volt adjustment resolution Jumpstart mode enabled for hard starting machines Pedal override button (no need for foot pedal if you run continuous mode) Universal input (90-240vac 50/60Hz) Peak Current: 4amp; 2amp continuous current High-quality amphenol 1/4" jack inputs for better power delivery and long life Built-in short circuit protection Easily bagged with typical machine or bottle bags Comes with US Power cord, magnetic mounting system, and switching power adapter Manufactured in the USA Warranty: 1 year
The Critical XRR is the top professional power supply in the Critical Tattoo range, equipped with a full-color TFT display, dual independent outputs, and advanced features for artists demanding maximum performance. Adjustable voltage from 0 to 17V with 0.1V resolution and presets with 2, 4, or 6 machine memories allow quick configuration and instant switching between different machine settings. The 6A peak and 3A continuous RMS current ensures constant power for any tattoo machine, and the two independent outputs allow simultaneous connection of two machines. The full-color TFT display with selectable color themes and large easy-to-read fonts provides professional monitoring of all working parameters. The billet aluminum CNC construction with genuine high-quality Amphenol jacks guarantees exceptional durability and superior power delivery. Built-in short circuit protection, pedal override mode, maintained and momentary pedal modes, and Jump Start function complete the feature arsenal. Universal 90-240VAC 50/60Hz input allows global use. The set includes a magnet mount, US power cord, and switching adapter. The Critical XRR comes with a full 2-year warranty, being the definitive investment for artists and studios accepting no compromises in power supply quality and functionality. The Critical XRR is the definitive investment for studios and artists accepting no compromises, offering the most complete feature set from a single power supply. American construction quality, Amphenol jacks, and 2-year warranty make the XRR a long-term investment with exceptional returns.
Frequently Asked Questions What display does the Critical XRR have? The Critical XRR features a full-color TFT display with user-selectable color themes and large fonts that are easy to read from a distance. The display shows voltage, operating mode, and other essential information in real time, providing professional monitoring of all parameters. How many outputs does the XRR have? The Critical XRR has two independent outputs allowing simultaneous connection of two tattoo machines. Each output can be set independently, allowing the artist to quickly switch between two machines with different settings without reconnecting cables. How many machine memories does the XRR have? The Critical XRR offers presets with 2, 4, or 6 machine memories, allowing saving voltage settings for different machines and instantly switching between them. This feature is ideal for artists using multiple machines with different voltages throughout a session. What jacks does the XRR use? The Critical XRR uses genuine high-quality Amphenol jacks, an industry standard recognized for reliability and superior quality. Amphenol jacks provide more stable connections and better power delivery compared to generic jacks, contributing to equipment performance and longevity. What current does the XRR provide? The Critical XRR provides 6A peak inrush current and 3A continuous RMS, identical to the Atom X. This power is sufficient for simultaneously powering two machines through the two independent outputs, ensuring stable performance without voltage drops. What material is the XRR made from? The Critical XRR is constructed from billet aluminum CNC machined, providing maximum durability and a premium finish. Billet CNC construction ensures dimensional precision and superior assembly quality, and the aluminum protects internal components in the daily professional use environment. What features does the XRR have? The Critical XRR includes: full-color TFT display, 2 independent outputs, 2/4/6 voltage presets, 0-17V voltage with 0.1V precision, short circuit protection, pedal override, maintained and momentary pedal modes, Jump Start, and universal 90-240VAC input. It is the most complete Critical supply. What warranty does the XRR have? The Critical XRR comes with a full 2-year manufacturer warranty covering manufacturing defects and functional components. Being the flagship product of the Critical range, it benefits from the complete technical support of the American brand. What does the XRR set include? The Critical XRR set includes the XRR power supply, magnet mount for mounting, US power cord, and switching power adapter. All that is additionally needed are RCA cables to machines and optionally a foot pedal. Is the XRR the best Critical supply? Yes, the Critical XRR is the flagship model of the Critical Tattoo range, offering the most advanced features: TFT display, 2 independent outputs, up to 6 machine memories, and premium Amphenol jacks. It is the definitive investment for studios and artists demanding absolute performance.