The widely used setup for the generation of femtosecond infrared (IR) pulses based on parametric amplifiers (OPAs) and difference frequency mixing (DFM) is extended to produce tunable narrowband mid-IR pulses. The insertion of pairs of silicon prisms after the OPA induces adjustable chirp, which leads to the generation of narrowband pulses in the DFM stage. Rapid tunability of the mid-IR wavelength via a computer-controllable actuator can be achieved in a range of ~200 cm^−1 at a bandwidth of the IR-pulses between ~15 and ~50 cm^−1 and pulse energies up to 0.4 μJ. The narrowband mid-IR pulses are well suited for 2D IR spectroscopy.