The Mondo LTS, the "S" stands for "Shorty" RNT has shortened the regular Mondo barrel a strong three quarters of an inch offering the Mondo LT in a new short barreled version. This speeds the air up getting to the reed and effectively reduces the backpressure even more maintain it's loose bottom end, what you put in, is what you get out along with making it a touch higher pitcheda | That high pitch raspy sound just may be the key that unlocks a Mondo wad of Mallards high out of a silver blue winters sky.