I compiled every instance of Krist getting specific about how he plays bass and his bass tone in interviews throughout the years (that I could find). As an amateur bass player myself I found his advice insightful.

sources:
   • In the Room with Nirvana and Soundgar...  
   • NIRVANA Interview (Seattle, 1990)  
https://www.ultimateguitar.com/news/...
https://www.guitarworld.com/features/...