Robert 'Hubi' Hofmann (born June 29, 1986 in Straubing) is a professional bassist and music producer from Abensberg, Germany.

After autodidactically learning to play the bass in 2003 and his first live shows in 2004, he founded his first band Metal Raign in 2005. This year also saw his first studio productions with Afraid Of Sheep and Stahlhelmverbot (legendary Deutschpunk band). At the same time he joined Road Crew with singer Philipp Janoske, with whom he and his brother Michael Air Hofmann would later found Radio Haze in 2007 (releasing 5 LPs, 5 EPs, and touring with ZZ Top, Uriah Heep, Ten Years After, Nazareth, Manfred Mann's Earth Band, Graveyard, a.m.m.).

2006-2009 he studied at Bass School Munich graduating with diploma as live & studio bassist. During those years he also started his own studio and DIY record label Hate 206045 Records and joined GumoManiacs (7 LPs, 2 headliner tours in Mexico, support shows in Europe for Sepultura, Blaze Bayley, Leaves Eyes, Suicidal Angels, Anvil, a.m.m.).

2009-2012 found him studying at Music College Regensburg graduating as certified music educator, as well as working as assistant engineer and session bassist for drummer/producer Stephan Ebn, and participating in TV/Cinema productions with Christoph Zirngibl, Helmut Zerlett, Andreas Weidinger, Boris Kunz, Konstantin Ferstl, and Detlef D! Soost.

 From his 2013/2014 Berklee College Of Music studies onward (graduating in music production), he's been touring with different Rock-, Metal-, but also Party-, Cover-, Wedding-, and Big-Bands, and working for the likes of The Platters, D'Hundskrippln, Donikkl, Rodscha & Tom, Ahmed Jahanzeb, Lady Jay, Mass, Strike Master, AntiPeeWee, Eradicator, Space Chaser, All Will Know, Burden Of Life, Fuchsteufelswild, The Prosecution, Far From Finished, 3 Dayz Whizkey, TG Copperfield, Kytes, Cosby and Beehoover to name only a few.

Since 2017 he's been working mainly at his newly founded Slash Zero Records studio and label and after having finished his studies at Friedemann Tischmeyer's Mastering Academy in 2021, he's now also calling himself an Apple Digital Masters certified mastering engineer.