Thanks gentlemen for the responses so far. I am well aware that Proceed is no longer manufactured or really supported (well) by Harmon. I've heard of issues with the AVP lcd displays and certain amps going into protective mode, but I believe that's mainly isolated to the Amp-5. For $500 I am willing to take a change on this older gear. It's not an insignificant amount of money for me, but it's also not too huge an investment.
I've heard great things about the HPA series. It might be that I end up going that route, but I do know it will set me back a little more than the Amp-2 or BPA-2.
I'd still like to hear about the sonic differences between the lines. I know the Amp line is the first and is rated at 150wpc. I know BPA came next at 125wpc and around the same time, if not at the same time, the HPA came out at 250wpc.
I've heard great things about the HPA series. It might be that I end up going that route, but I do know it will set me back a little more than the Amp-2 or BPA-2.
I'd still like to hear about the sonic differences between the lines. I know the Amp line is the first and is rated at 150wpc. I know BPA came next at 125wpc and around the same time, if not at the same time, the HPA came out at 250wpc.