Vin is a Sine wave at 1kHz and VG is 4.5V.
From what I understand this circuit should boost the signal I provide it with my guitar. Simulated the circuit on LTSpice which provided the expected output at Out. But when I built the circuit, and supplied it with an input signal from my guitar and output into a guitar amp, it was significantly more quiet than what the guitar would sound going straight into the amp. What would be the reason for the signal being so quiet and what would I further need to read up on to understand what is going on with the opamp circuit.
EDIT: For the built circuit I used an NJM4560D opamp.