Yongki considers himself as an aerospace engineer by day and an audio/home-theater enthusiast by night. Yongki earned his Sc.D in aerospace engineering from MIT in 1999 and pursued a career as a professor in Singapore and later on in the US before deciding to change path to join the aerospace defense industry. He was a member of the SECRETS Team in the early years, before moving to Singapore for a number of years. He rejoined Secrets not too long after he has returned to the US in 2012. Although his field of expertise is in aerospace control systems as exemplified by more than 80 technical articles in various aerospace-related journals and conferences, his passion is always in hi-fi audio reproduction. It is this continued passion for audio that has brought him once again to the SECRETS team.