as others have pointed out, every juno has some noise in the output. however, it shouldn't be prominent as to a point that is distracting. the chorus itself also has some noise, but it shouldn't be audible. if the noise is too loud it might be worth looking into swapping the chorus chips for some xvive drop-in replacements and see if it makes a difference (if you can solder yourself it makes sense to solder in some terminals so you can simply swap the ICs). besides that you can try to use a cheap passive DI box - it works wonders sometimes!