The HB power plant iso2-pro is awesome! Completely isolated and extremely quiet, worth £61 from Thomann. I already love the optocomp, classic preamp is amazing, working on the scrambler and the chorus is just what is 😎 with my US pbass through the classic preamp, optocomp & liquifier pedal, I swear I had Phil Lynotts bass sound on Jailbreak! All the Ampeg pedals are well made and sound great for the relatively cheap price 👍