Wanting to capture what made Sun Studio great, Ross-Spang championed hard to find, install, and use the same period equipment that Sam Phillips engineered with from the 1950s.

[1] His 11 years of dedication to Sun, and its signature sound, garnered national attention when it was featured by Lester Holt on NBC's Nightly News[2] and The Today Show, as well as NPR's All Things Considered.

Ross-Spang continued engineering for Dave Cobb on records by Mary Chapin Carpenter, Chris Isaak, The Rival Sons, Corb Lund, Lori McKenna, Brett Dennen and the album Southern Family.

Engineered, mixed and co-produced by Ross-Spang,[8] the record debuted this year in the top 10 Billboard country charts to critical acclaim.

In 2016, Ross-Spang was hired by Sony Records to mix 18 previously unreleased songs by Elvis Presley from his historic 1976 sessions from the Jungle Room at Graceland.

[15] "The undulating ceiling and lack of 90-degree angles or parallel surfaces in the live room reportedly give the impression that the space is a lot bigger than it is".

[16] “I knew I didn’t want acoustic tile,” Ross-Spang says, opting instead for the burlap-and-wood design favored by such iconic Memphis facilities as Stax Records and Ardent Studios.

I’ve always loved that look and sound.” [17] Matt Ross-Spang worked as the engineer on The Fluffy Jackets' debut album Fighting Demons featuring producer/ guitarist Manny Charlton (Nazareth) and bassist Neil Murray (Whitesnake).

[24] That same year, Don Bryant received a nomination for Best Traditional Blues Album forYou Make Me Feel, mixed by Ross-Spang.