decoupling a high power signal?

[SArepairman]

I would like to decouple a high power signal (200mA rms) to remove offset errors from the amplifier.

Is it possible to use some kind of capacitor (tantalum slug?). Or is a transformer required?
The signal is 40kHz.

[baldengineer]

Why do you consider 200mA to be "high power?  That sounds pretty low to me.

[SArepairman]

Because I don't have ANY experience with signals that are not just fed into another op-amp.

Will a regular decoupling capacitor work?

[kalobg]

Because I don't have ANY experience with signals that are not just fed into another op-amp.

Will a regular decoupling capacitor work?

Capacitor should be ok for amplifier offset errors.  200mA is lower power range, but the cap will accomplish what you want regardless if 200mA is high or low power--just make sure you pick a cap appropriate for your application.