Well, and then very early on.

So that's still the core because it's invaluable.

You can't replace it basically at this point.

and then we add the secrets around it how to make it even better yes and we need of course we spend a lot of time on making that core as linear as possible but then we have we have to add extra loop gain around it to make it an audiophile grade product and yeah that's we're using an interleave topology this is nothing new we have Yeah, designers have been using that for a long time.

Interleaved, negative feedback, non-inverting.

Each integrator stage here is a second order.

So in total, it's a fourth order slope, which goes up to where it can merge with the slope of the output filter.

no.