TIP 120/125, any simple amps ?

[tinitus]

any point in trying, or waste of time ?

 

[lineup]

They are high gain darlington, typical hFE is 2500 ...
The maximum VCE is only 60 Volt
so you should use no more than 2x25 VDC or 2x30 VDC.

This means max 2x20 VAC transformer. Preferably 2x18 transformer.
Into 8 Ohm you can count on max something like 30 Watt.

 

[wahab]

Good to be driven by a NE5532 for about 10-12W/8R if you have
any use for a low power amp , let say as PC amp.

Anything more complexe would be wasted by thoses devices ,
i guess that even a 5532 would be more happy with Sankens
darlingtons instead.

 

[tinitus]

I would consider it only as a tweeter amp for active bass guitar speaker

sounds like it would be ok to just take the heatsink and build a chip amp instead

 

[Fusion916]

junk the transistors, save the heatsink for something else.

 

[wg_ski]

Don't junk them. You never know when you'll need a relay driver or something.