Head-end with 32 programmable VHF/UHF filters suitable for medium-sized TV installations, even in the presence of DVB-T2 standard signals. Available in the self-powered version (83840A) and mast version (83840P), both with an output level of 100 dBµV per single mux. It optimizes terrestrial digital signals from 4 VHF/UHF inputs with adjustable gain 0-20 dB with AGC and organizes them to avoid conflicts and level differences, providing high-quality television service. Programming requires the optional programmer 83840PRG and is performed via PC using the dedicated software "X-Prog," or with an Android smartphone and the free X-App. The programming procedure with “X-Prog” and “X-App” is simple and immediate: it is possible to manage potential conflicts on various inputs and save desired configurations for quick use in programming multiple units. Ideally, the installer can purchase only one programmer and use it to manage multiple head-ends, resulting in significant cost savings.83800S is a auto programming mast amplifier with 3 inputs VHF/UHF.