"Adam Sampson"

This schematic shows MJ3001 and MJ2501 as equivalents for SCSN1 and SCSP1:
http://www.drtube.com/schematics/marshall/2099u.gif

These are Darlington pairs, so they have much greater hFE than the
2N3055/MJ2955. They're only about a fiver a pair from Farnell.


** If someone fits 2N3055s and MJ2955s instead of the correct types, the
transistors will run hot but deliver low power.

Seen done it a few times and the repair tech could not figure it out.


..... Phil