Description

The Shadow SH-965 (also referred to as SH-965 NFX / SH-965 NFX-B) is a pickup + preamp system designed specifically for upright (double) bass.
Shadow Electronics
+2
Musikhaus Thomann
+2

It uses Nanoflex foil technology, which can pick up both string vibrations and the bridge / body vibrations of the bass.
Shadow Electronics
+1

Because of the way it’s built, it`s very low-noise (“100% hum-free˝) — good for live use.
Musikhaus Thomann

The system is active, meaning the preamp is built into the unit, not passive.
Shadow Electronics