Quiet Air Compressors

Kaeser’s 3-, 5- and 7-hp SX rotary screw compressors are available
with pressures from 80 to 190 psig. They provide improved performance,
continuous duty
cycle and the lowest noise levels in the industry at 62
dB(A).
Kaeser Compressors, Inc.
http://www.kaeser.com/sigma