Both set-top boxes support DVB-C transmission using MPEG-2 compression, the standard used by Virgin for both SD and HD video.
bˈoʊθ sˈɛttˈɑːp bˈɑːksᵻz səpˈoːɹt dˌiːvˌiːbˈiːsˈiː tɹænsmˈɪʃən jˈuːzɪŋ ˈɛmpˈɛɡ tˈuː kəmpɹˈɛʃən, ðə stˈændɚd jˈuːzd baɪ vˈɜːdʒɪn fɔːɹ bˈoʊθ ˌɛsdˈiː ænd ˌeɪtʃdˈiː vˈɪdɪoʊ.