Home Jambase Jimbo Hart Confirms Departure From Jason Isbell & The 400 UnitNational Music NewsJambaseJimbo Hart Confirms Departure From Jason Isbell & The 400 UnitNovember 27, 202329FacebookTwitterPinterestWhatsApp jimbo hart confirms departure from jason isbell the 400 unit Bassist Jimbo Hart announced he has parted ways with Jason Isbell & The 400 Unit.Source: JamBase.com