Complex sentence: Roger McGuinn liked the effect so much that it became his signature guitar sound with the Byrds, making the Beatles (along with Dylan) huge influences on the folk rock explosion that would follow in the next year.
Split into simpler sentences: Roger McGuinn liked the effect so much that it became his signature guitar sound with the Byrds. In addition to the Byrds and Dylan, the Beatles were a huge influence on the folk rock explosion that would follow in the next year.