[sdiy] Headphone amps using op-amps

Veronica Merryfield veronica at merryfield.ca
Wed Dec 12 19:36:35 CET 2012


On 2012-12-12, at 9:52 AM, Tom Wiltshire <tom at electricdruid.net> wrote:

> If I'm driving a pair of cheap headphones from a standard op-amp (I've got a TL072, a MC1458 or a LF353 available - you don't get much more 'bog standard' than that lot) is there anything special I need to do?

I use NJM4556AD - it can provide 70mA to the output. I try to rig it as a follower stage only although one can use some gain, in which case I add some roll off. I add a resistor in series with the load just to protect it from shorts etc. Working fine in 1000s of units out there.


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