Feature: 1) accurate and repeatable welding current setting for mma welding with exceptional arc stability and controlled heat input.2) true vertical welding current characteristics.3) stable arc with regular droplet transfer.4) constant penetration for more regular welds5) less spatter.6) built-in electronically controlled ' antistick ' for prevention of electrode freezing and ' hot start ' for improved starting.7) built-in-protection against h.f. Interference and thermal run away.8) power source suitable for tig welding when connected with tig console for normal and pulsed tig.