Archived request from the wiki:

Subahar

• Other names: Surbahar, Bass sitar
• Wikipedia: Surbahar
• Family: Strings
• Description: The subahar, sometimes known as bass sitar, is a plucked string instrument used in the Hindustani classical music of North India. It is closely related to sitar, but it has a lower tone.
• Appears on:
  1. Anthology of World Music: North Indian Classical Music (disc 3)
  2. Al Palna (played by Bert Cornelis, credited as other string instruments)
• Comments:
  • A Discogs instrument AR we don't yet list. – BrianSchweitzer