Altec 9440A - cloning best solid state amp ever

[djk]

"Wow, three parallel driver transistors to drive only 4 output transistors. What an effort of design overpowering feeble early parts. "

OK, since you're so smart, what would you use?

Remember, you need good SOA at 100V, 30Mhz, 6A, and a 200°C rating.

[pinkmouse]

The last time Bra asked a question like this it ended up with the KrellKlone project and about 15000 posts...

[djk]

I considered having the heatsink machined and something like MJW3281/1302 drivers, but decided that the original 2N3584/6421 were a better way to go.

MJ21196 for outputs, not quite as much SOA as the original 2N6259, but they should be OK.

The real question in my mind are the MPSU10/60, not sure about what to use here (NOS parts are $$$).