correct, if you look at ebay after searching for air horns, there are a gazilliion little compressor out there. Most of those as I recall have rather dinky electrical motors, plus a tank. couple gallons of tank volume filled to like 125 psi or something probably does a good job at blowing those horns. Problem is motor filling it back up, and that's why I was saying it would work ok for smaller tires. Also not sure what these are rated for as far as run time. Don't think you can even talk tools with this unit.looks like a fairly nice compressor what ever it is but I dont think it is meant for airing up big tires or running air tools.