Clear any shift by holding the PBT clear button. Turn both PBT knobs until the SFT display reads -400. Press and hold on some buttons brings up menus relevant to that button. AGC brings up an AGC menu. VOX brings up a vox menu.
Filter brings up a filter menu.
The main set menu is split up into four areas. I'd be wasting my time and yours to go into that because it's all self explanatory. It's probably a good idea to bookmark the Linear Links main page and not this page. You see as the site expands I may change this page's location and you'll loose it. The Linear Links main page will always be there.