In this paper, a simple method is proposed for alignment of EEG signals and auditory stimuli. In typical event-related potential (ERP) studies, hardware or software synchronization is used to provide the event synchronization of auditory stimuli, which is not a perfect real-time synchronization. In this study, an EEG signal acquisition frontend is used for simultaneous measurement of EEG signals and auditory stimuli. Experiments are conducted to verify the electrical performance of the proposed method. Experimental 􀅳esults show that EEG signals are captured in a synchronized method to auditory stimuli while maintaining high quality electrical performance.