Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. David Trumfio (born in Chicago in 1968) is a record producer, mixer, engineer and songwriter. Dave grew up in Mt. Prospect, Illinois, and was a staff engineer after apprenticing at Seagrape Recording Studios. He then started his home studio, Kingsize Recording Den, and officially opened Kingsize Soundlabs in Chicago's Wicker Park district in 1991. He currently resides in Los Angeles and runs Kingsize SoundLabs, a recording studio in Silver Lake, California. He has worked with acts such as Wilco, Ok Go, and Patrick Park.