We describe a simple coupling scheme of superconducting vibrating wire reso
nators to a SQUID amplifier for achieving supreme signal to noise character
istics. Our construction resulted in a gain factor near 10(8)phi (0)/V at I
kHz with an amplifier noise level of about 20 mu phi (0)/root Hz. Extremel
y small movements of the wires in very small magnetic fields can thus be de
tected.