simbiosi2020

Hi there I have a little problem. If I connect the Hx Stomp with the 4 cables method no matter if I add the Fx loop L block I hear sound. In the Manual it's written that without that block I shouldn't hear any sound ... but if I deactivate the block I hear a sound ( different of course from when the block is activated ). I have the feeling that this changes my overall tone when the Fx loop block is activated. any experience ? thanks