Best drivers for BJT output stages

[kenpeter]

IRF(9)610 yes! Especially for drive hungry BJT like 2N3055.

 

[nigelwright7557]

IRF(9)610 yes! Especially for drive hungry BJT like 2N3055.

The Maplin 225WRMS 2N3055/MJ2955 amp used BD711 and BD712 drivers.

 

[infinia]

2nd for these TO-126 as drivers

NPN 2SD669 with Fairchild KSC2690A as modern subs
PNP 2SB649 with " " KSA1220A "

VAS or current source
NPN 2SD668 with Fairchild KSC3503 as sub

 

[K-amps]

Rotel uses 2SB817/2SD1047 in there Big Amps.

upto 200w? These are 140vce parts and can't take +/-90vdc railed amps in the 250-350watt range, so i wonder what they used in their 380watter.

Adcom 555 mk.II also uses them s drivers with +/-84vdc rails, I guess the 33 ohm ER's saves them. I can't recall if its Cambridge or some other Brit amp that used them as OP devices. They have decent gain.