sentences:  In 1972 new models included the P100 and P50mkII integrated amplifiers, the R40 transmission line loudspeaker and the T50 FM stereo tuner.Export sales had also begun and were proving very buoyant, in part due to the introduction of export-only products, including the TL100 and 200 transmission line speakers, the P75X integrated amplifier and the T75X stereo tuner.Stan Curtis put together a new team and re-designed the existing products as well as introducing a raft of new models.