Everytime someone new is looking for a compressor, someone will come and tell them get the shoebox. Is the shoebox a compressor? Cause it needs a shop compressor of about 100 psi and boost it up to 4500 psi, hence the name booster. Imo the shoebox is not a compressor but a booster. If the shoebox is a compressor, does all booster than require a shop compressor also a compressor? Just a thought.