Threshold SA3 is a bit less expensive than the Krell KSA50; I prefer Threshold and this is a good one. A Bryston 3b or 4b is also an excellent amplifier and there are always a few for sale; get one with warranty so you know it is no more than 20 years old.
Levinson 27.5 at 1700, or so, is a wonderful option and great sounding; used one for years and then switched to tubes with a LOT less power.
VTL tube amps are a great value on the used market.
Levinson 27.5 at 1700, or so, is a wonderful option and great sounding; used one for years and then switched to tubes with a LOT less power.
VTL tube amps are a great value on the used market.