BMC030 Guitar Input amplifier & attenuator
This module provides an input point for external instruments to your modular system. It can be used with guitar, bass, keyboards or other audio. It requires no special parts to build. The PCB has MOTM and Eurorack style power connecters.
http://www.bartonmusicalcircuits.com/gtrin/
Module is available as a DIY project only.
No info about availability.