Acoustoelectric imaging (AEI) is a new technique for mapping current densities at high resolution depending on the size of the ultrasound (US) focus. The design and performance of the recording system is crucial for efficient AEI because the amplitude of the AE signal in biological tissue is on the order of a microvolt or less. In this direction, an AE signal processing circuit (AE-SPC), containing high voltage pulse suppressor, variable gain amplifiers, and variable frequency bandpass filters (BPF) is developed to minimize sources of noise and maximize sensitivity for signal detection. AE-SPC is tested and evaluated using both simulations and bench-top testing. The design may be optimal for AE mapping of weak electric currents in excitable tissue, such as the heart and brain.