The device offers 6 built-in synergistic modes – MIG Steel CO₂ 100%, MIG Steel CO₂ 25%, MIG Alu Argon 100%, MIG CuSi Argon 100%, MIG Stainless Steel (Ar+2% CO₂) and Self-Shielded MIG. These pre-programmed characteristics automatically adjust the parameters (voltage, inductance, wire feed) to the selected material and shielding gas. Professionals will appreciate the ability to quickly change the program, for example from galvanized sheets (CuSi brazing) to aluminum, without manually performing a full calibration. An operator with less experience gets correct settings and a stable arc right away, minimizing the risk of spatter and faulty welds. This makes welding as easy as it is effective, especially for tasks requiring frequent material changes.

The MIG Puls function increases the amount of heat introduced into the material in a controlled manner, allowing for better penetration and weld quality, regardless of position. It also has the effect of reducing spatter and improving the appearance of the final stitch – resulting in shorter finishing times. In addition, the user can tune the inductance of the arc, which provides flexibility in adjusting the wire melting characteristics to specific conditions (type of steel, thickness of the workpiece). Experienced welders thus achieve exceptionally smooth and aesthetically pleasing welds, while less advanced users get an arc that is easier to control. In practice, this translates into welding that is precise and free of unpleasant surprises, such as under-melting or rough edges.

The machine features Double Pulse mode, in which two frequencies of current pulses and/or wire feed occur, giving high control over the distribution and fusion of the weld pool. This advanced technique is sometimes indispensable for aluminum and stainless steel, where weld appearance and quality are a priority. Professionals value Double Pulse for its ability to reduce distortion and maintain an even scale with less spatter. For less experienced welders, such a mode “forgives” minor errors in the guidance of the handle, because the pulse itself imposes a certain melting rhythm. In addition, thanks to the 4-roller feeder and the ability to select the wire (0.8-1.2 mm), the device remains versatile in the automotive, manufacturing and repair industries.

In addition to its main purpose – MIG/MAG welding – the TECNO MIG 337 PULSE SYNERGIC LCD also allows the use of covered electrode(MMA) and TIG Lift methods. In MMA, you can count on a current of up to 250 A and additional HOT START and ANTI STICK functions to improve starting and prevent electrode sticking. The TIG Lift method comes in handy for quick fixes, minor repairs to stainless steel and other applications requiring a nice, clean weld, without the need for a separate TIG HF source. This allows the welder to choose the most suitable method for the task at hand, taking full advantage of a single multi-process inverter. For the less skilled, such a solution saves space in the workshop and minimizes expenses on additional equipment, while maintaining high quality standards.

The built-in VRD (Voltage Reduction Device) reduces the idle voltage in MMA mode to a safer value, which protects the operator in humid or corrosive environments. HOT START briefly administers a higher welding current upon arc ignition, which prevents difficulties in heating the electrode and eliminates the risk of sticking to the material. Complementary to this ANTI STICK automatically shuts off the voltage when the electrode sticks, making it easier to detach the electrode without damage. Professionals in field work appreciate such safety features because they increase comfort and reduce accidental failures. For less experienced operators, these features provide reassurance that, even in adverse conditions, they don’t have to worry about shock or nuisance sticking.

The device is equipped with a clear LCD display (7 inches) where you can configure parameters such as wire feed speed, voltage, inductance, pulse width or double pulse frequency. The modern menu makes switching between modes (MIG Puls, MIG Synergy, MMA, TIG Lift) intuitive and doesn’t require guessing at the optimal values. Professionals will quickly adjust the settings to the specifics of the material to be welded, edge or position, while for less advanced welders, predefined synergy programs that select the basic parameters themselves will be key. Combining the inverter with digital control ensures that every adjustment immediately translates into a more stable and predictable arc.

The housing conceals fan cooling and overload protection, which dramatically increases the reliability and service life of the unit. A three-phase power supply (3×400 V) allows stable operation at higher current ranges, and a built-in 36-volt outlet allows connection of a gas heater regulator in cold hall conditions or outdoor installations. In addition, the kit includes a professional MIG 36 chuck (3 meters), ground and electrode cable (also 3 meters), as well as rollers for steel, stainless steel and aluminum wire in typical 0.8-1.2 mm sizes. This allows the user to start working with various materials almost immediately, saving time and the hassle of completing accessories. The durable housing and well-thought-out layout of internal components (such as the 4-roller feeder) make it easy to service the machine later and keep it in excellent condition.