There are side chain effects loops for channels A & B as well as one global to the entire pre amp. There is an insert loop, which can be run in three modes – Bypass, Side chain or Insert with a dedicated return level, and finally there is a Pre amp out/Power amp in loop. (FS4). The by word for the VH100R is flexibility – flexibility of tone and flexibility of use. In this day and age the modern guitar player has an arsenal of products available to them – from single stomp box effects to mighty racks. To cater for this level of choice the VH100R is fitted with five effects loops, each giving the player slightly different options when connecting external gear. There are side chain effects loops for channels A & B as well as one global to the entire pre amp. There is an insert loop, which can be run in three modes – Bypass, Side chain or Insert with a dedicated return level, and finally there is a Pre amp out/Power amp in loop.