Available as an assembled Module and as a DIY project.
This Module is currently available.
Clone of Buchla 171 instrument preamplifier
La Sesenta y Siete 171 Dual Instrument Pre-amplifier consists of two preamplifiers for electric guitars, contact microphones, and other low-level signal sources. Input impedances are 200 k ohms; input connectors are standard phone.
https://modularaddict.com/171-dual-instrument-pre-amplifier-pcb-panel-la67
Audio Centron 171$49.50
UB3/171 UB3/171$14.99
Humes & Berg 171=5$197.75
Humes & Berg 171=2$81.68
Humes & Berg 171=3$118.65
These merchants probably sell this module. Huh?
Sears 171 -33654501