Presented at the 16th International Cryocooler Conference, held May 17-20, 2008 in Atlanta, Georgia.High efficiency pulse tube coolers driven by linear compressors usually operate between 30 Hz and 60 Hz. This article presents the performance of a high efficiency in-line PTC with an operating frequency of 100 Hz. The theoretical model of a PTC is based on thermoacoustic theory. Analytical results indicate that the PTC operating at 100 Hz could obtain a high efficiency with appropriate parameters. To couple the PTC, the parameters of linear compressor are optimized using compressor governing equations. Experimental results show that a no-load temperature of 31.8 K and a cooling power of 12.4 W at 77 K are obtained with an input electric power of 185.2 W