These are zipped PDF files

Impression / Digitech Telephone User Guides
DXP and FX

Impression 2022S and DigiTech 7700S Reference Manual GCA70-226(.06)(684 KB)

Impression 2022S and DigiTech 7700S Station User's Guide GCA70-198(.06(323 KB)

Impression 2122S and DigiTech 7714S Reference Manual GCA70-224(.05)(497 KB)

Impression 2122S and DigiTech 7714S Station User's Guide GCA70-314(.03)(301 KB)

Impression 2101N and DigiTech 7701X Station User's Guide GCA70-227(.07)(158 KB)

DSU and DSU II

Impression 2022S Reference Guide GCA70-332.03 (372 KB)

Impression 2022S Station Guide GCA70-328.03(118 KB)

Impression 2122S, 2122X Reference Guide GCA70-333.03(231 KB)

Impression 2122S, 2122X Station Guide GCA70-329.03(101 KB)

Impression 2101N User Guide GCA70-330.03 (79 KB)