Linn lk-85

Hi i was looking at the part list for the lk-85 complete list of all components and was comparing the it to the parts in my lk-85 and i spotted 3 transistors that dont match , they are the input transistors C1SSB on the part list it says they should be 2C4391

can anyone help me find info on these C1SSB SMT transistors should i change them for the 2C4391