The principles of electrokinetic phenomena are well‐documented in classical electrochemistry. This paper discusses a low‐frequency, electrokinetic, acoustic pressure transducer, suitable for both airborne‐ and underwater‐sound applications, that uses the principle of electrokinetic transduction. A broad frequency response has been obtained, which extends from 0.001 to 100 cps. A pressure sensitivity of 3.8 μV/dyn/cm2(266 mV/psi) is illustrated.