[sdiy] Headphone amps using op-amps

[John Speth]

> 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?

Great question!  I suppose the answer lies in how do we design an
inexpensive circuit that can reliably drive a low impedance inductive load
with reasonable sonic fidelity.

JJS