Brushless DC Servo Amps

Does anyone know of a source for reasonably priced brushless DC Servo Amps?

Has anyone ever seen these surplus?

I picked up a bunch of brushless servos quite reasonably, but now I
need the amps to do anything useful with them (other than serve as
doorstops).

Any hints or pointer appreciated.

Thanks
Paul
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Paul Amaranth | Rochester MI, USA
Aurora Group, Inc. | Systems & Software
paul@... | Unix / Windows / NT