@ geek101
FWIW, my Krell FPB 400cx sounds just fantastic with my old Legacy Audio Signature II speakers. The FPB series date back to around 2002, but if in good condition sound great. The 400cx is rated at 400 wpc into 8 ohms, but as you surmise, that may be way more power than needed for the Aeris. I have seen 400cx listed for ~$4,800. But Krell also made lower wattage versions of the FPB amps. I think there was a FPB 200 and FPB 300. These are now selling for a couple thousand dollars. These are class A amps! Some of them have only XLR inputs, so you'll have to investigate.
FWIW, my Krell FPB 400cx sounds just fantastic with my old Legacy Audio Signature II speakers. The FPB series date back to around 2002, but if in good condition sound great. The 400cx is rated at 400 wpc into 8 ohms, but as you surmise, that may be way more power than needed for the Aeris. I have seen 400cx listed for ~$4,800. But Krell also made lower wattage versions of the FPB amps. I think there was a FPB 200 and FPB 300. These are now selling for a couple thousand dollars. These are class A amps! Some of them have only XLR inputs, so you'll have to investigate.