2013, Chris Buono, The Guitarist's Guide to Line 6 Studio Tools, Cengage, →ISBN, page 196:
Once you experience the phatness a bass amp can inject into a signal, […]
2013, Exquisite Corpse, or, How Not to Kill Your Neighbours[1], Blackfriars, →ISBN:
He's always telling Beth about the enormity of his next gig and the extraordinary phatness of his latest beats, and to be fair he can drop a good tune.
2015, Ian Corbett, Mic It!: Microphones, Microphone Techniques, and Their Impact on the Final Mix, Focal Press, →ISBN, page 76:
But if a sound source is a little thin, and needs some warmth, body, or “phatness,” a tube mic could provide useful “sonic makeup.”