We propose two types of modified neutron spin echo (NSE) spectrometer using the quantum precession caused by multilayer spin splitters. The first spectrometer is constructed by replacing the precession magnet with a pair of two spin splitters. The new NSE spectrometer requires much less volume and magnetic field compared to the conventional NSE spectrometer. The second spectrometer is designed to measure the small angle scattering from a plane sample. The principle and performances of the two types of the modified methods are discussed. (C) 1999 Elsevier Science Ltd. All rights reserved.