Zach Rudulph is the man! He plays bass, synths, and is also the music director for Andy Grammer.
https://www.zachonbass.com/
Radial Engineering: http://www.radialeng.com/
Facebook: https://www.facebook.com/radialeng/
Twitter: https://twitter.com/Radial_Eng
Instagram: https://www.instagram.com/radialeng/