Just saw two of the POA2800's on a site called Audioweb for sale for $375 each. Perhaps you could replace your dead one with another just like it - and keep a spare for parts when you need them.

Are you talking about a two-channel system or multi- channel?

Probably run through two 8-pair speaker distribution boxes each with impedance control.

Either get a used amp like you have or look at any other 200 watt per channel stereo power amp. A couple of Outlaw 2200 M-blocks or an Emotiva RPA-1 come to mind.

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Probably run through two 8-pair speaker distribution boxes each with impedance control.

If that is the case, Maybe a Pro-style amp like one these in the $200 - $300 range ~ 100 watt @ 8 ohm in 2-ch would work well in a commercial application.

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Probably run through two 8-pair speaker distribution boxes each with impedance control.

If that is the case, Maybe a Pro-style amp like one these in the $200 - $300 range ~ 100 watt @ 8 ohm in 2-ch would work well in a commercial application.

Agreed, a pro amp would serve such an application well, especially from the durability standpoint. Perhaps the ART SLA2 for $290.