STEREO MAX 98.1 (San Martín Texmelucan)

Stereo Max (XHMAXX-FM) is a radio station on 98.1 FM in San Martín Texmelucan, Puebla. It is owned by Cinco Radio and carries a grupera format.

The station received its first concession on June 8, 1993, as XHSTX-FM, owned by Teleradio de Teziutlán, S.A. de C.V. It was sold to Radio XHMAXX, S.A. de C.V., in 1998; the station may have signed on under the XHMAXX call sign, and by 1999 it certainly no longer used the old one, as XHSTX was reassigned in Santiago Tuxtla, Veracruz.