 This trend reached its zenith with The Who's use of a dozen JBL 4350 monitors, each capable of 125 dB and containing two fifteen-inch woofers and a twelve-inch mid-bass driver.Most studios, however, also used more modest monitoring devices to check how recordings would sound through car speakers and cheap home systems.A favourite "grot-box" monitor employed in this way was the Auratone 5C, a crude single-driver device that gave a reasonable facsimile of typical lo-fi sound.