Amass Connectors Amass Electronics is the original creator of XT series connectors and has been specializing in design and manufacturing of high current DC connectors for more than 20 years. Amass manufactures wide range of connectors including: third generation XT series connectors, XT30 XT30U MR30 MT30 XT60 XT60H MR60 MT60 XT90 XT90H XT120 AS120 XT150 AS150 AS150U AS250 male and female connectors. Forth generation LC LF XL LIFTF series: LCC30 LCB30 LCA40 LCC40 LCB40 LCA50 LCB50 LCA60 LCB60 LFB