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Preamplifier project by Nelson Pass

Korg Nutube B1 Preamplifier

The "B1K", from Nelson Pass, is a fantastic project marrying the Korg Nutube with the famous B1 buffer. With a complete kit and an exceptional build guide available, it's an excellent project for almost anyone.

Korg Nutube B1 Preamplifier

Key Information

  • Preamplifier Project
  • Designed by Nelson Pass
  • Beginner Difficulty
  • Complete Kit Available
  • Comprehensive Build Guide


  • The Korg Nutube is a new and exciting platform
  • 'Tube sound' with an interesting circuit and currently available parts


At the Burning Amp Festival (BAF) in 2017 Nelson Pass presented a pre-amp using the Korg Nutube dual triode. The pre-amp has become a favorite of DIYers everywhere.

Purchase just what you need based on what you have in your stash or get everything you need in a complete kit.  The Complete Build Guide helps DIYers just getting started to complete an exceptional pre-amplifier in a few afternoons.