NTS regular Silvia Kastel has been hosting a show since 29 January 2019. Silvia Kastel is a frequent guest to NTS, appearing on various shows between 7 November 2017 and most recently on 30 October 2018. Silvia Kastel has been played on NTS over 70 times, featured on 76 episodes and was first played on 28 June 2017.

Silvia Kastel has been a fixture of the Italian underground since her precocious teens. She's also clocked up miles in Control Unit with Ninni Morgia. Both solo and in her work with others, Kastel has explored the outer limits and inner workings of no wave, industrial, dub, extreme electronics, free rock and improvisation, with 2017's Air Lows both her fullest and most refined offering to date, a work of vivid, isolationist electronics.