Sub-ohm tanks (DTL) are atomizers that produce more vapor and therefore gives more flavour but they require more power than Standard MTL atomizer tanks. These tanks are designed to work with more powerful higher end mods to produce large clouds through direct-to-lung vaping rather than mouth-to-lung vaping with simple atomizers and standard tanks. Subohm tanks use low resistance coils only compatible with mods capable of firing below 1Ohm range. Sub-ohm tanks are not always suitable for beginners.